Question

MEDAL

A graduated cylinder with a radius of 3 cm contains water to a height of 9 cm. Yann adds 15 steel balls, each with a diameter of 2.54 cm.

What is the total volume of the contents in the cylinder after the balls are added? Use 3.14 to approximate pi and round your answer to one decimal place.

cm3

Answer 1

@Godlovesme

Answer 2

Wait lemme c if I can solve this :P

Answer 3

ok

Answer 4

Sorry I can't D: I apologize.... @directrix can u help

Answer 5

Let me see.

Answer 6

Take the equation for the cylinder, r = 3 and h = 9

Get the volume of one sphere, r = 1.27. There are 15 spheres.

Answer 7

That gives this:

pi * 3^2 * 9 + 15 * ( (4/3) * 3.14 * (1.27)^3 ) = ?

Answer 8

???

Answer 9

Cylinder volume: pi * 3^2 * 9

One Sphere: ( (4/3) * 3.14 * (1.27)^3 )

Answer 10

15 spheres: 15 * ( (4/3) * 3.14 * (1.27)^3 )

Answer 11

@TeenWolfGirl

Evaluate this:

3.14 * 3^2 * 9 + 15 * ( (4/3) * 3.14 * (1.27)^3 ) = ?

Answer 12

383?

Answer 13

@Godlovesme Will you evaluate:


3.14 * 3^2 * 9 + 15 * ( (4/3) * 3.14 * (1.27)^3 ) =

Answer 14

Note that I subbed 3.14 for pi prior to the calculation.

Answer 15

383

Answer 16

wait

Answer 17

You can take the expression to the "Wolf" and calculate there:

http://www.wolframalpha.com/

Answer 18

>> round your answer to one decimal place

Answer 19

382

Answer 20

http://www4c.wolframalpha.com/Calculate/MSP/MSP671320415g43f7ah614100005a4h7ibcbh10b0ae?MSPStoreType=image/gif&s=6&w=230.&h=36.

http://www4c.wolframalpha.com/Calculate/MSP/MSP671720415g43f7ah61410000196b94ibf5ca361a?MSPStoreType=image/gif&s=6&w=84.&h=20.

Answer 21

i did look at the website link that is where it is from

Answer 22

ok

Answer 23

382.9784524 =383 right?

Answer 24

Yes. To the nearest tenth, that is what?

Answer 25

383.0 to the nearest tenth if you approximate pi as 3.14 before number crunching. @TeenWolfGirl

Answer 26

Thanks

Answer 27

You are welcome.