Reasoning A cylindrical water tank holds 26 litres when full. The water tank is 36 cm tall.
Work out the radius of the tank to 2 d.p.
(4 marks)

Answers

Answer 1

Answer:

r = 15.16 cm

Step-by-step explanation:

Mathematically, we need a consistent unit

26 liters = 26,000 cm^3 as 1000 cm^3 = 1 L

The volume of a cylinder is;

V = pi * r^2 * h

26,000 = 3.142 * r^2 * 36

r^2 = 26,000/(3.142 * 36)

r^2 = 229.86

r = √229.86

r = 15.16 cm


Related Questions

Which represents the decimal 0.071
A. 71 tenths
B. 71 hundredths
C. 71 thousandths
D. 71 Ten thousandths

Answers

Answer:

c 71 thousandths

Step-by-step explanation:

A plane descended an average of 200 feet per second for 15 seconds. How far had the plane descended at the end of the 15 seconds?

Answers

Answer:

3000 ft

Step-by-step explanation:

If we're going 200 ft per one second, that means, to find the distance after 15 seconds, then we have to multiply:

200 fps (feet per second) x 15 seconds = distance.

Distance = 3000 ft

(-3,-2). (9. -15)
Slope

Answers

answer:

-13/12

Step-by-step explanation:

use the formula to find slope using points

it is: y2-y1/x2-x1

plug in point values into formula

-3 = x1. 9 = x2

-2= y1. -15 = y2

-15-(-2)/ 9-(-3)

-13/12

Answer:

m= -13/12

Explanation:

formula to solve: x1-y1

                            x2-y2

Please help me with this

Answers

Answer:

1. -10x + 9

2. 7/16x + 2

3. 2/3x -2

4. x + 1/3

5. -7x - 2/15

Answer:

1 is 6x+9

2 is 7/16x +2

3 is 2/3x -2

4 is x + 1/3

5 is -7x + -2/15

Step-by-step explanation:

answer my other question hshkdhrjklw

Answers

Answer:

hfhedcvgfhsla

Step-by-step explanation:

al you have to do is laugh

Answer:

Cual es tu otra pregunta?

Step-by-step explanation:

Back Next
Question 6
Determine whether each pair of triangles is similar. Justify your answer.
10
18 25
(85°
45
85
Ω

Answers

Answer:

The triangles are similar as the ratio of their corresponding sides are equal

Step-by-step explanation:

When two triangles are similar, the ratio of their corresponding sides are equal

As we can see, 85 is between 10 and 18

The ratio of the numbers will be ;

10/18 and 25/45

To the simplest terms;

5/9 and 5/9

Since the ratio is equal, then the triangles are similar

Item 2
Identify the initial amount $a$ and the rate of growth $r$ (as a percent) of the exponential function $y=25\left(1.2\right)^t$ . Evaluate the function when $t=5$ . Round your answer to the nearest tenth.
a=
r= %
when t=5, y=

Answers

Answer:

a = 25

r = 20%

y (5)= 62.2

here you go pro

What is the simplified value of the expression below? 1/3 ÷ 2/3 simplified​

Answers

Answer: 1/2

Step-by-step explanation:

Glad I could Help Its 1/2

Answer:

1/2

Step-by-step explanation:

Keep change flip!

1/3 / 2/3

1/3 x 2/3

1/3 x 3/2

Which equals...

3/6

Which also equals...

1/2!

Hope this helped!

Someone help plz worth 5 point :(

Answers

Answer:

86 its the same thing on both sides if im wrong then 90?

Step-by-step explanation:

The answer will be 86 since it’s acrosss from it

Miss Guydan and her friend Alyssa are collecting food for the local food bank. Their goal is to collect 2100 pounds of food. They start with 400 pounds of food donated by a local grocery store. Their goal is to collect 25 pounds of food per day. Write an equation that represent this situation. Define your variables.

Answers

Answer: Required equation: 400+25x = 2100

Variable: x = Number of days to donate 2100 pounds.

Step-by-step explanation:

Let x = Number of days.

y = Total pounds of food donated in x days.

Given: Initial amount of food = 400 pounds

Pounds of food donated per day = 25

Total food = Initial amount of food + (Pounds of food donated per day ) (Number of days)

y =  400+25x

Their goal is to collect 2100 pounds.

2100 = 400+25x  [Substitute y= 2100]

Required equation: 400+25x = 2100

Variable: x = Number of days.

ecan someone plase help me on this

Answers

Answer:

I think it is C that would be the best answer

What’s the slope of (9,6)
(1,4)

Answers

y= (1, 4) times x + (15, 4)

The Answer is:

8/2=4

you can draw a graph but you can just do (9-1)/(6-4) which equals to 8/4 which can be 4

amy has 24 dolls, 18 of her dolls have blond hair and the rest have black what is the ratio of the number of dolls that have black hair to the number of dolls that have blond haie

Answers

Answer: 6 : 24 is for black haired and 18 : 24 is for blond

Step-by-step explanation:

18 : 24

24 - 18 = # of black haired dolls

6 = # of black haired dolls

Ratio

6 : 24

what is (4x - 4) + (2x + 2)? (no direct answer.)​

Answers

Answer:

6x -2

Step-by-step explanation:

(4x - 4) + (2x + 2)

4x + 2x = 6x

-4 + 2 = 2

6x - 2

can someone please help me? it would mean so much to me. thanks a lot!

Answers

Answer:

Maybe  -3

Step-by-step explanation:

I am not 100% sure but it is better than nothing,

since 3+3=6 I think after 3 is 6, and after 6 is 9. I think that because the more right the line goes you add  3 to every move. So therefore, 3-3=0, and 0-3= -3

Hope this helps. Also, I hope I gave you the correct answer.

3x=5y-9 2y=3x+3
solve​

Answers

Answer:

(1/3 ,2)

Step-by-step explanation:

Solve the following system of equations graphically. y=2x-3 x+y=3 What is the solution set?
A. [(2.1))

B. {(-2, -1)]

C. {(-1,-2)]

D. {(1,2)​

Answers

B I think, you shouldn’t trust me but ok
The correct answer is A. :)

A pizza shop can put together 4 pizzas in 12 minutes. What is their production rate in pizzas per hour?

Answers

i’m sure it’s 20 if not i’m sorry

Answer:

I think it'd be 20 pizzas an hour

Step-by-step explanation:

Write a situation to represent the equation
Y = 5x

Answers

5+5+5+5+5
it’s like 5 apples or 5 anything 5 times

If Juan makes $20 an hour, write an equation that
shows how much Juan can expect to make over time.

Answers

Answer:

Let y be the total earning x be the hours workedand 20 be the hourly rate y=20x

A company has 64 employees of whom x are members of a union. How many employees are not union members?

Answers

Answer:

To find the number of members that are not part of the union, we take the total number of workers (64) and subtract it with the number of workers that are in a union (x). So because of this, the answer is:

64 - x

Is 6/2 simplified ? ............

Answers

Answer:

No, 3

Step-by-step explanation:

6/2

How many times can 3 go into 6?

Answer is 3 times because 2 x 3 is 6.

Answer:

3/1

Step-by-step explanation:

Find the GCD (or HCF) of numerator and denominator

GCD of 6 and 2 is 2

Divide both the numerator and denominator by the GCD

6 ÷ 2 /2 ÷ 2

Reduced fraction:  

3/ 1

Therefore, 6/2 simplified to lowest terms is 3/1.

The area of a rectangle is 255.2 m2. If the length is 16 m, what is the perimeter of the rectangle?

Answers

Answer:

P= 63.9m

Step-by-step explanation:

Answer:

I believe the perimeter is 63.9m

Lesson 3.3T - Calculating Slope from Graphs
Name
Period
Date
Sketch a line that has the given slope.
1. Positive Slope
2. Negative Slope
3. Zero Slope
4. Undefined Slope
Itt
Draw a slope triangle for each line (when possible) and give the slope. Remember to designate
if slope is positive or negative.
5.
6.
Remember
that slope is
rise over run.
SLOPE =
SLOPE =
8.
2
4-3
.
-2
SLOPE
SLOPE =
EdGems Core - Course 3
Copyright 2018 All Rights Reserved
Lesson 3.3 - Calculating Slope from Graphs

Answers

Answer:

1. draw a line from the bottom left quadrant to the top right quadrant

2. draw a line from the top left quadrant to the bottom right quadrant

3. draw a horizontal line in any quadrants

4. draw a vertical line in any quadrants

5. Connect to the dots by going up to and right two. The slope will be 1.

6. Connect the dots by going up four and left two. The slope will be -2.

7. Connect the dots by going up for and right one. The slope will be 4.

8. You cannot connect the dots because it's a zero slope, so the slope is 0.

Step-by-step explanation:

Hope this helpsss! :)

I’m just doing it for pointe

Not understanding this

Answers

Answer:

120 yd

Step-by-step explanation:

To find the volume, we have to multiply the length, width, and height. We have 8, 6, and 10 as our length, width, and height. First, let's go with the length and width. 8 times 6 is 48. Since it's a triangle, we have to divide by 2. 48 divided by 2 is 24. Now let's multiply by the height. 24 times 5 is 120, so that will be your volume.

Complete the following table for the equation y = 2x + 5

Table: 0. 1. 2. 5. 7.

Pls help im in the middle of a test

Answers

Answer:

0 is 5

1 is 7

2 is 9

5 is 15

7 is 19

Dayne has dinner at a local restaurant. The cost of his meal is $24. He wants to leave a 20% tip. What is Dayne's total bill including tip?

Answers

His bill will be $28.80 with the tip
Explanation:
To find the amount of the tip u turn 20% into a decimal 0.2 then multiple it by 24 you get 4.8 then add 24 to 4.8 and u get 28.8
They are right. I just did the math and the total came out to $28.80.

Use the given x and y values to write a direct variation
equation. Enter your answer in the form y = kx.
x = 5, y = 50

Answers

The form is y = kx

Replace y and x:

50 = k(5)

Solve for k by dividing both sides by 5

K = 10

pweez help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

A, B, C

Step-by-step explanation:

Original Equation: 5x=45

Dividing by 5 on both sides: 5x/5 = 45/5

The result: x=9

Check: 5(9)=45, 45 = 45.

Thus, the correct order of steps should be A, B, C.

Let me know if this helps!

Find the slope of the line from a graph. Will give brainliest!!!

Answers

Answer:

2/1 or 2

Step-by-step explanation:

to find the slope you have to calculate the rise over run, do this by picking two spots on the line that go thourgh the corner of a square. then count the amount up the is your rise then the lateral movement, the is your run.

this means the answer is 2/1 that can be simplified to 2.

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