Question

Alice purchased paint in a bucket with a radius of 9 in. and a height of 9.5 in. The paint cost $0.09 per in3.

What was the total cost of the paint, rounded to the nearest cent?
Use 3.14 to approximate pi.

Answer 1

V=π×r2×h

where r is the radius of our buck, and h is the heoght of our buck.
so what is the volume V?

Answer 2

2,416.23?

Answer 3

Yes!!!

Answer 4

woohoo!!

Answer 5

Corrrection:
Cone Volume = (π • r² • h) ÷ 3

Answer 6

this is a cylinder....

Answer 7

Sorry :-(

Answer 8

nah your good

Answer 9

thanks :-)

Answer 10

Kirsten used a log to make an umbrella stand. The log was 28 in. tall and had a radius of 7.5 in. Kirsten cut a cylindrical shape, with a radius of 5.5 in., out of the center of the log.

After Kirsten cuts out the cylinder, what is the volume of the remaining portion of the log? Use 3.14 to approximate pi, and express your answer to two decimal places.

Answer 11

First find the volume of the whole log.

Answer 12

V=πr2h

Answer 13

Volume = PI * r^2 * height
Volume = PI * 5.5^2*28

Answer 14

Plug in what we know:

\(V = (3.14)(7.5^2)(28)\

Multiply 3.14 * 7.5 * 7.5 * 28

Answer 15

4,945.5

Answer 16

yeasss

Answer 17

I think they want the volume of the remaining portion (radius = 5.5)

Answer 18

Oh?

Answer 19

Multiply 3.14 * 5.5 * 5.5 * 28

Answer 20

2,659.58

Answer 21

Joan’s washing machine tub is a cylinder with a height of 17 in. and a diameter of 22 in. Her washer was half full of water when it stopped working. The repair person’s pump removed 46.2 in3 of water every second.

How many seconds did it take to empty the washer? Use 3.14 to approximate pi, and round your answer to the nearest whole number.

A.
70 s

B.
140 s

C.
280 s

D.
559 s

Answer 22

And what do you think it is?

Answer 23

B....

Answer 24

radius = 11 inches
Volume = PI * 11*11* (17/2)
tub was half filled with water

Answer 25

a?

Answer 26

I think "a" is the correct answer

Answer 27

I agree @wolf1728

Answer 28

A large cylinder contains a saline solution for science experiments. The cylinder has a height of 40 mm and a radius of 12 mm. Braddock pours the saline solution into test tubes that each hold 3014 mm3.

How many test tubes can Braddock prepare?
Use 3.14 to approximate pi, and round your final answer to the nearest whole number.

Answer 29

Do you have an answer yet errinss?

Answer 30

uhm..i think its 6

Answer 31

That's what I have - we must be right
Very good!

Answer 32

woohoo, one more?

Answer 33

Okay

Answer 34

Monte performs an experiment using 2 identical graduated cylinders with a radius of 2 cm. The volume of the liquid in the first graduated cylinder is 188.4 cm3. The volume of the liquid in the second graduated cylinder is 314 cm3.

What is the difference in the height of the liquid in the two cylinders?
Use 3.14 to approximate pi.

Answer 35

i think 10cm is the difference

Answer 36

Question 1 Incorrect
Question 2 Incorrect
Question 3 Correct
Question 4 Correct
Question 5 Correct

Answer 37

Since V= PI*r^2*height
1st cyl
188.4 = PI * 2*2 * height
height = 15

2nd cyl
314 = PI * 2*2* height
height = 25

Difference = 10 cm
Very good errinss!!!

Answer 38

i got 60% :(

Answer 39

Did you use all the answers you posted here?

Answer 40

ya

Answer 41

geez, I thought you had done those correctly.

Answer 42

1. 217.46
2. 2285.92

Answer 43

For the first one I got 217.57 (I'm using PI= 3.14159265...)

Answer 44

ya thats what your supposed to use i dont know what i did but i got it wrong

Answer 45

The East-Side soccer team has a cylindrical water cooler that is half full. The diameter of the cooler is 12 in. and the height is 15 in. The team’s drinking cups hold 20.14 in3.

How many drinking cups can be filled from the cooler? Use 3.14 to approximate pi, and round your answer to the nearest whole number.

A.
14

B.
42

C.
84

D.
169

Answer 46

would it be C?

Answer 47

No - don't forget it is half-full

Answer 48

A

Answer 49

No it would be "B"

Answer 50

oh...

Answer 51

A bricklayer uses a cylinder to store sand. The cylinder is 5 ft tall and has a radius of 0.5 ft. Each batch of mortar contains 0.48 ft3 of sand.

How many batches of mortar can the bricklayer make with 1 cylinder of sand?
Use 3.14 to approximate pi, andround your final answer to the nearest whole number.

Answer 52

Cylinder volume = PI*.5*.5*5
= 3.927 cubic feet

Answer 53

haha thats waht i got...kinda i got 3.925

Answer 54

3.927 / .48 = 8.812
Round that to 8 batches

Answer 55

ok there is one more question

Answer 56

Well let's get to that one

Answer 57

A dispenser holds 5652 cm3 of liquid soap and is now full. The radius of the dispenser is 7.5 cm.

What is the difference between the height of the soap in the full dispenser and the height when 4239 cm3 of soap remains in the dispenser?
Use 3.14 to approximate pi.
im thinking its 30 cm is the difference

Answer 58

Height = volume / PI*r*r
Height = 5,652 / 176.71
Height = 31.98 = 32 (rounded) (when full)

Answer 59

i still got 60% wth ugh

Answer 60

#2 and #5

Answer 61

Question 1 Correct
Question 2 Incorrect
Question 3 Correct
Question 4 Correct
Question 5 Incorrect

Answer 62

Height = 4,239 / 176.71
Height = 23.98 = 24 (rounded)
Difference = 8

Answer 63

Is question 5 the one we just did?

Answer 64

YA

Answer 65

i accidentally hit 9 my finger slipped

Answer 66

oh geez one slip makes it wrong!

Answer 67

And what was question #2?

Answer 68

lol uhm i cant remember but i did that one without you lol :( my fault

Answer 69

sheesh well maybe it's time to end this - for now

Answer 70

for now...lol okay

Answer 71

Okay - cya

Answer 72

bye thank you for your help

Answer 73

u r welcome