Question

the circumference of the base of a right circular cylinder is 220 CM if the height of the cylinder is 2 find the lateral surface area of the cylinder

Answer 1

we know circumference of circle is 2πr=220cm then πr=110 cm.

lateral surface area of cylinder =2πrh
2×110×2=440cm^2

Answer 2

circumference = 2πr
220 = 2×22/7× r
220×7 /44 =r
35=r
area = 2πrh
= 2×22/7×35×2
= 440cm^2