Question

The curved surface area of a cylinder of height 14 cm is 88 sq. cm. The diameter of the cylinder is 1cm.

• A. 1.5
• B. 2

Answer 1

The correct option is B

2

CSA of a cylinder = 2$\pi rh$

Given that, CSA = 88 $c{m}^2$ and h = 14cm

Therefore , 2$\pi$rh = 88

2r = $\frac{88}{\left(\pi \right)h}$

2r = 88 × $\frac{7}{22}$ × $\frac{1}{14}$

2r = 2 cm

Hence, Diameter = 2 cm.