Question

rectangu
ular
sheet of metal 44cm
long and
20cm broad is rolled along its length into a
cylinder . Find
the CSA of the cylinder​

Answer 1

Answer:

880 cm²

Step-by-step explanation:

44 cm is the length of rectangular sheet which become circumference of circular part of cylinder.

20 cm become the height of cylinder.

CSA of cylinder = 2πrh

Height = 20 cm

Circumference of circle (2πr)= 44 cm

From above written we see

2πrh contains circumference of circle and height means,

circumference of circle × Height of cynlinder

putting values

44 × 20= 880 cm²