The radii of the ends of a frustum of a cone 45 cm high are 28 cm and 7 cm. Find its volume, the curved surface area and the total surface area.

Explanation

To solve the problem of finding the volume, curved surface area, and total surface area of a frustum of a cone with given dimensions, we will follow these steps:

### Given:
- Height (h) = 45 cm
- Radius of the top base (r1) = 28 cm
- Radius of the bottom base (r2) = 7 cm

### Step 1: Calculate the Volume of the Frustum
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