Question

tell rectangular sheet with length 22cm and breath 8cm rolled along the length to form a right cylinder find the radius of the cylinder

Answer 1

breadth of rectriangle =diameter of cylinder=8cm
radius=8/2=4cm

Answer 2

Answer:

Step-by-step explanation:

Perimeter of rectangular sheet and perimeter of circle(the face of the cylinder) are equal.

So,

2(l+b) = 2πr

2(22+8)=2x22/7 x r

2(30) = 2 x 22/7x r

2 will get cancelled on both sides

30x7/22 = r

9.95=r

Hence the radius is 9.95