Question

Question!

The curved surface area of a right circular cylinder of height 14 cm is 88 cm². Find the radius

Don't forget this answer!​

Answer 1

Given :

• Curved Surface Area of Cylinder = 88cm²
• Height of the Cylinder = 14cm

To Find :

• Find the Radius of Cylinder ?

Solution :

• We know that,

➣ CSA of Cylinder = 2πrh

According to the question :

➣ 88 = 2 × 22/7 × r × 14

➣ 88 = 2 × 22 × r × 2

➣ 88 = 2 × 22 × 2 × r

➣ 88 = 2 × 44 × 2

➣ 88 = 88 × r

➣ 88/88 = r

➣ 1cm = r

➣ r = 1cm

Hence,

• Radius of the Cylinder is 1cm.

Answer 2

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Height (h) of cylinder-14 cm

& radius of cylinder be (r)

Given

Curved surface area of cylinder 88 cm

2πrh = 88 cm²

$\sf \: 2 \times \frac{22}{7} \times r \times 14cm = 88$

$\sf \: r = \frac{88 \times 7}{2 \times 22 \times 14}$

$\sf \: r = \frac{616}{616}$

$\sf \: r = 1$