Question

The volume of a spherical balloon with radius 2.6 cm is about 74 cm3. Estimate the volume of a similar balloon with radius 10.4 cm. the larger balloon has a volume of about what cm3 ?

Answer 1

Let V be the volume of the larger balloon

We will apply proportion to get the volume

`(74)/(V)=(2.6)/(10.4)`

cross-multiply

`2.6V\text{ = 769.6}`

Divide both-side by 2.6

`V=296cm^3`