Question

4. The volume of a spherical balloon with a radius of 3.1 cm is about 125 cm3. Estimate the volume of a

similar balloon with radius 6.2 cm.
250 cm
500 cm
750 cm?
1,000 cm

Answer 1

`1000cm^(3)`

Explanation:

Use formula
`V = (4)/(3) \pi r^(2)`. Substitute 6.2cm for r (radius).

`V = (4)/(3) \pi (6.2)^(3)`

`V=(4)/(3) \pi 238.328` Multiply 238.328 and pi.

`V=(4)/(3) 748.7294939447` Multiply748.7294939447 and 4.

`V=(2994.9179757788)/(3)` Divide by 3.

`V=998.3059919263` Round up to
`1000cm^(3)`

Answer 2

1,000cm

Explanation:

I just did the practice. I got it right.