Question

A rectangular piece of paper of dimensions 22 cm x
14 cm is rolled along the ength to form a cylinder. Find
the radius of the base of the cylinder so formed.​

Answer 1

Answer:

3.5 cm

Step-by-step explanation:

When rectangular page is rolled the length of the rectangle becomes the circumference of the base of the cylinder. Therefore

$2 \times \pi \times r = 22 \\ r = 22 \times 7 \div (22 \times 2) \\ r = 7 \div 2 = 3.5$