The picture below shows a container that Tim uses to freeze water.

What is the minimum number of identical containers that Tim would need to make 2000 cm3 of ice? (Use π=3.14.)

5

7

22

20

Question

The picture below shows a container that Tim uses to freeze water.
 
               
 
What is the minimum number of identical containers that Tim would need to make 2000 cm3 of ice? (Use π=3.14.)

 5

 7

 22

 20

anonymous · Answer

attachment

campbell_st · Answer

find the volume of 1 container

$$V = \pi r^2 h$$

in the diagram the radius is 2cm   as the diagram shows a diamter
                                height = 8 cm


calculate the volume

$$V = \pi \times 2^2 \times8$$

then its 2000/V to get the number of containers... 

a rough guess you'll need 20