Question

the radius of a spherical balloon increases from 7cm to14cm as air is pumped into it find the ratio of the volume of the balloon before and after pumping the air

Answer 1

Answer:

Step-by-step explanation:

volume before= 4/3 x 22/7 x 7 x 7 x 7

volume after=4/3 x 22/7 x 14 x 14 x 14

while taking the ratios the volumes can be simplified

∴ratio= 1/8