A rectangular paper of width 8cm and length 22cm rolled along it width and a cylinder is formed.

On the above Intimation, Solve the question given below

The radius of the cylinder is-

$\frac{7}{2}$ cm

The correct answer is Option Option 3: $\frac{7}{2}$ cm

Step 1: Identify circumference

When rolled along the width, the length becomes the circumference of the base.

Circumference = 22 cm

Step 2: Use the formula

Circumference = $2\pi r$

2πr=22

Using π=22/7

22 = 2 * 22/7 * r

r= (22 * 7) / 44 = 7/2