Question

Find the lateral surface area of two pillars if height of the pillar is 7m and radius of the base is 1m?​

Answer 1

Answer:

44m^2

Step-by-step explanation:

r = 1m

h. = 7m of a pillar

CSA of a cylinder = 2πrh

2 × 22/7 × 1 × 7

= 2× 22

= 44 m^2

Answer 2

The lateral surface area of the two pillars is 88 m²

Given:  

The height of the pillar is 7m and the radius of the base is 1m  

To find:

Find the lateral surface area of two pillars  

Solution:

Formula used:

The lateral surface area of a cylinder = 2πrh  

Where r = radius and h = height

Given the height of the pillar = 7m

The radius of the base of the pillar = 1m

By the given formula,  

The lateral surface area of a cylinder = 2πrh    

Leteral surface area of one pillar = 2(22/7)7(1) = 44 m²  

The lateral surface area of two pillars = 2 × 44 m² = 88 m²  

Therefore,

The lateral surface area of the two pillars is 88 m²

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