Question

a diameter of a height of cylinder are 10 centimetre and 7 centimetre respectively find its curved surface area ​

Answer 1

Answer :

440cm²

Explanation :

In a cylinder,

• Diameter of the base = 10cm.
• Height = 7cm.

Find it's C. S. A. (curved surface area)

We know that,

→ C. S. A. of a cylinder = 2πrh

Where,

• r(radius) = 10/2 = 5cm. [½ of diameter]
• h(height) = 10cm.
• Taking ‘π’ as 22/7

So,

→ 2 × 22/7 × 7 × 10

→ 2 × 22 × 10

→ 440cm²

∴ The curved surface area of the cylinder is 440cm²

Answer 2

Answer:

The height of cylinder is = 10cm

The radius of circle is = 7cm

The curved surface area of cylinder is 2πrh

so:

2x 22/7 x7 x 10

20 x 22

440cm²

Step-by-step explanation:

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