Question

HELP!

Answer 1

@welshfella

Answer 2

well - you are evidently studying the equations for volume

you have a sphere of radius 2

you have a cylinder radius 2, height 4

there are 2 simple equations for finding each volume.

Subtract the sphere from the cyclinder volume to fimd your answer

Answer 3

Such an impatient little rookie.

Answer 4

@volleyballlover55
what is the equation for calculating the volume of a sphere?

Answer 5

um, i believe its...
4/3*pi*r^3

Answer 6

good - that is coorect

so if r=2 what is the volume?

Answer 7

hmm.. im not sure

Answer 8

why not? you know the equation - and you know r.....

Answer 9

oh lol sorry, is it 2^2?

Answer 10

it tells you to use pi = 3.14

Answer 11

im sorry 2^3 i meant..

Answer 12

yes

Answer 13

ok then..

Answer 14

so if r=2 what is the volume?

Answer 15

8

Answer 16

you wrote the correct equation above

8 is just a part of it

Answer 17

ok so what do i do ?

Answer 18

you wrote

V=4/3*pi*r^3

you know that r^3 = 8
so what is the volume?

Answer 19

let me solve that.

Answer 20

i got 33.4..

Answer 21

now find the volume of the cylinder

r=2
h=4

Answer 22

ok so whats the formula?

Answer 23

I'm sure you have that in your notes.

This is what you are studying

Answer 24

wait im sorry, is it a new problem i have to solve?

Answer 25

or are we still in the same equation

Answer 26

have you read the question?

it asks oyu to find the difference in volume between the cylinder and the sphere

you have just calculated the volume of the sphere

NOW you need to find the volume of the cylinder..

look up the equation for volume of a cylinder in your text or notes or google

THEN calculate the volume when r=2 and h=4

Answer 27

@volleyballlover55
I am outta here in a few minutes
If you want help then write the equation for a volume of a cylinder...