Question

find the lateral surface are of the 4 Piller if the height of each Piller is 20m and radius of base is 1.4m​

Answer 1

ⓢⓞⓛⓤⓣⓘⓞⓝ

Lateral surface area is denote as also curved surface area

Required data,

radius of the cylinder=1.4 m

height of the cylinder=20 m

To solve the sum we use curved surface area of the cylinder

curved surface area of the cylinder=2πrh

curved surface area of the pillar =2×22/7×1.4×20m²=176 m²

curved surface area of 1 pillar=176 m²

curved surface area of 4 pillar=176×4 m²

=704 m²