Question

A rectangular sheet of paper of dimension 20 cm x 14 cm is folded along the breadth to form a
cylinder. Find the radius of the base of the cylinder so formed.​

Answer 1

Answer:

3.18 cm

Step-by-step explanation:

the circumference of the base is 20cm

we know, the circumference of the cylinder = 2×22/7×r

20=44/7×r

20×7/44 = r

3.18 = r

hence, radius of the cylinder is 3.18cm

Answer 2

Step-by-step explanation:

2πr=14

C.S.A=2πrl

14×20

=280cm

2