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-
Answer & explanation
Correct answer: option 3
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 = 2πr2\pi r2πr
2πr=22
Using π=22/7
22 = 2 * 22/7 * r
r= (22 * 7) / 44 = 7/2