Question

A hard candy has a radius of 9 mm. The candy has a spherical soft center with a radius of 6 mm, with a hard shell surrounding it.

What is the volume of the hard shell?
Use 3.14 to approximate pi and express your final answer in hundredths.

??? mm^3

Answer 1

So just do total volume of hard candy - volume of soft center

Answer 2

Sorry but like I'm not good at math :'( could you help me with the formula??

Answer 3

Volume of a sphere is \[\frac{ 4 }{ 3 }\pi*r^3\] Just put in the radius value and calculate in a calculator.

Answer 4

Okay one second!

Answer 5

288??

Answer 6

288pi

Answer 7

How in the world did you get that answer?

Answer 8

I used 6 as my radius :/

Answer 9

With 9 I got 972pi

Answer 10

You should have done\[(\frac{ 4 }{ 3 }\pi*9^3)-(\frac{ 4 }{ 3 }\pi*6^3)\] And you are supposed to use 3.14 as pi, so pi shouldn't be in the answer itself.

Answer 11

Ok, I see what you did wrong. Subtract 288pi from 972 pi and then multiply the answer by 3.14

Answer 12

Ohhhhhh okay thanks so much

Answer 13

What did you get for your answer?

Answer 14

Wait do I subtract 972 by 288 or the other way around?

Answer 15

???

Answer 16

972-288

Answer 17

Okay thanks

Answer 18

You're welcome

Answer 19

I got 2148.84937506

Answer 20

Right @LegendarySadist

Answer 21

6747.38703769 this is what I got after I multiplied it by pi