Question

a rectangular tin foil of size 22 CM by 16 cm is wrapped around to form a cylinder of height 16 cm find the volume of cylinder

Answer 1

Hi ,

Dimensions of the rectangular foil

Length = l = 22 cm

Breadth = b = 16 cm

Dimensions of the cylinder made by

foil ,

Let radius of the base = r cm

Circumferenceof the cylinder base =

length of the rectangle

2πr = 22

r = 22/2π

r = ( 22 × 7 ) / ( 2 × 22 )

r = 7/2 cm

Height of the cylinder = breadth of

the rectangle

h = 16 cm

Therefore ,

Volume of the cylinder = π r² h

V = 22/7 × 7/2 × 7/2 × 16

V = ( 22 × 7 × 4 )

V = 616 cm³

I hope this helps you.

:)