The height of a solid cone is 12cm and the area of the circular base is `64pi cm^2`.A plane parallel to the base of the cone cuts through the cone 9cm above the vertex of the cone ,the area of the base of the new cone so formed is a)`9picm^2` b)` 16picm^2` c)`25picm^2` d)`36picm^2`

Explanation

To solve the problem step by step, we will follow these steps:

### Step 1: Understand the given information
We are given:
- Height of the cone (h) = 12 cm
- Area of the base of the cone = 64π cm²

### Step 2: Find the radius of the base of the cone
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