Multiple choice

The radius of a hemisphere is 7 cm, find its volume.

  1. 718.67 cubic cm

  2. 1437.34 cubic cm

  3. 239.56 cubic cm

  4. 359.34 cubic cm

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Volume of hemisphere = 2/3 * pi * r^3 = 2/3 * (22/7) * 7^3 = 2/3 * 22 * 49 = 2156 / 3 = 718.666... cubic cm.

AI explanation

The formula for the volume of a hemisphere is (2/3)pi*r^3. Substituting the radius of 7 cm and using 22/7 for pi gives (2/3)(22/7)*7*7*7. The sevens cancel out, leaving (2/3)*22*49, which equals 2156/3. Dividing this results in approximately 718.67 cubic cm.