Question

math ex13.2 class 9​

Answer 1

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Answer 2

Q) The curved surface area of a right circular cylinder of height 14 cm is 88 cm2. Find the diameter of the base of the cylinder.

Answer:-

Let r be the radius of the base and h = 14 cm be the height of the cylinder. Then,

Curved surface area of cylinder =2πrh

⇒ 88=2×227×r×14

⇒ r=88×72×22×14=1

Therefore Diameter of the base = 2r =2×1=2cm