A spherical balloon has a radius of 8 cm. What is the ratio of the volume of the balloon to the volume of a smaller balloon with a radius of 4 cm?
Show answer & explanation
Correct answer: B
Explanation
Radius of the large balloon = 8 cm, Radius of the small balloon = 4 cm
According to the formula:
Volume of a sphere = r³
Ratio of volumes = 8³ : 4³
= 512 : 64
= 8 : 1