Question

A rectangle piece of paper 11cm×4cm is folded without overlapping to make Cylinder of height 4 cm . The volume of Cylinder so formed is?

Answer 1

Answer:

Step-by-step explanation:

Length of rectangle paper =11cm

Breath - - - - - - - - - - - - - - - =4cm

So circumference of circular part of cylinder =2 pi r

So it is equal to length of paper (paper folded in shape of cylinder)

7=2 pi r

r=7/2 pi

R=1.11cm

Volume of cylinder = pi r² h

H=4cm

R=1.11cm

Volume = 3.14x(1.11)²x4=15.48cm³

Answer 2

Area of the rectangle piece= 11 * 4 = 44 sq.cm.

Volume of cylinder = 22/7 * 4 * 11 = 138