Question

The volume of a hemisphere is 89.83 cm. Find its diameter

Answer 1

Step-by-step explanation:

Given:

     volume of a hemisphere = 18000πcm³

To find :

  diameter of hemisphere

Pre-requisite knowledge :

  volume of hemisphere =

Solution:

substitute the values in the equation;

Thus, r = 30cm

hence diammeter of it is 2*30 = 60 cm

Answer 2

Answer: 7cm

Step-by-step explanation:

Volume of sphere = 4/3 π R^3

So, volume of a hemisphere

= 1/2 × 4/3 π R^3

Given,

89.83 = 2/3 × π × R^3

or, 89.83 = 2/3 × 3.14 × R^3

or, R = 3.5 (approx)

Diameter = 2R = 2× 3.5 = 7