The total surface area of a hollow cylinder which is open from both sides is 4620 sq. cm area of base ring is 115.5 sq. cm and height 7 cm. Find the thickness of the cylinder.

Explanation

To find the thickness of the hollow cylinder, we will follow these steps:

### Step 1: Write down the given values.
- Total Surface Area (TSA) = 4620 cm²
- Area of the base ring = 115.5 cm²
- Height (h) = 7 cm

### Step 2: Understand the formula for the total surface area of a hollow cylinder.
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