Question

The curved surface area of a cylinder is 1320 cm². If it's height is 30 cm, find its diameter​

Answer 1

8

Step-by-step explanation:

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Answer 2

Diameter = 14cm

Given ,

• CSA of cylinder = 1320 cm²
• Height = 30cm

We need to find ,

• Diameter = ?

As we know that,

• CSA of cone = 2πrh

So ,

→ 2πrh = 1320

→ πrh = 1320/2

→ πr(30) = 660

→ πr = 660/30

→ πr = 22

→ r = 22/π

→ Radius = 7.0028 ≈ 7cm

Now ,

• Diameter = 2 × Radius

=> Diameter = 2 × 7

=> Diameter = 14cm