Question

A rectangular sheet of paper of length 35cm and breadth 28cm is folded in two ways to form a cylinder. Find the difference in the volume of cylinders formed​

Answer 1

Step-by-step explanation:

First way of making cylinder is

Taking breadth as height and the length as circumference of circle .

[ for finding radius ]

circumference of circle = 2πr

let the radius be x.

35 = 2×22/7 × x

5.5 cm [approx ]= x

1;Volume of cylinder = πr^2h

= 22/7 × 5.5^2 × 28

= 2660 cm^3

lly

second way of making cylinder is

circumference of circle = 2πr

let the radius be x.

28 = 2×22/7×x

x = 4.45 [approx]

2;volume of cylinder = πr^2h

= 22/7 × 4.45^2 × 35

= 2177 cm^3

Now

difference of volumes of two of the cylinders =

2660-2177 = 483