The total surface area of a hemisphere is `462 cm^2`. Find its diameter (in cm).

Options

A. 7
B. 28
C. 21
D. 14

Explanation

To find the diameter of a hemisphere given its total surface area, we can follow these steps:

### Step 1: Understand the formula for the total surface area of a hemisphere.
The total surface area (TSA) of a hemisphere is given by the formula:
\[ \text{TSA} = 3\pi r^2 \]
where \( r \) is the radius of the hemisphere.
...