Question

11.If a rectangular piece of paper of dimension 44 cm X 20 cm is rolled to form a hollow cylinder of height 20 cm, then the radius of the cylinder is ____

Answer 1

Answer:

radius = 7 cm

Step-by-step explanation:

length of rectangular paper = 44 cm

breadth of rectangular paper = 20 cm

the length of rectangular paper becomes the circumference of the cylinder

circumference of cylinder = 2πr = 44 cm

2 × 22/7 × r = 44

r = 44 × 1/2 × 7/22

r = 22 × 7/22

r = 7 cm

hope you get your answer