Find the lateral surface ate of two pillars if height of the pillar is

1.	Find the lateral surface ate of two pillars if height of the pillar is 7m and radius of the base is 1.4m.
Answer» Answer: Lateral SURFACE area of two pillars is 122.2 m². Step-by-step explanation: GIVEN that, HEIGHT of pillar is 7 cm. Radius of the base is 1.4 m We know, Shape of pillar is cylinder. First we will find lateral surface area of one pillar. Lateral surface area of cylinder = 2πrh Here, r and h are radius and height of cylinder. Putting, r and h in formula $\longrightarrow 2 × 22/7 × 1.4 × 7$ $\longrightarrow 44/7 × 9.4$ $\longrightarrow 431.2/7$ $\longrightarrow 61.6$ Lateral surface area of one pillar is 61.6 m². Lateral surface area of two pillars = 2 × Lateral surface area of one pillar. $\longrightarrow 2 × 61.6$ $\longrightarrow 122.2$ Therefore, Lateral surface area of two pillars is 122.2 m².

Find the lateral surface ate of two pillars if height of the pillar is 7m and radius of the base is 1.4m.

Answer»

Answer:

Lateral SURFACE area of two pillars is 122.2 m².

Step-by-step explanation:

GIVEN that,

HEIGHT of pillar is 7 cm.

Radius of the base is 1.4 m

We know,

Shape of pillar is cylinder.

First we will find lateral surface area of one pillar.

Lateral surface area of cylinder = 2πrh

Here, r and h are radius and height of cylinder.

Putting, r and h in formula

$\longrightarrow 2 × 22/7 × 1.4 × 7$

$\longrightarrow 44/7 × 9.4$

$\longrightarrow 431.2/7$

$\longrightarrow 61.6$

Lateral surface area of one pillar is 61.6 m².

Lateral surface area of two pillars = 2 × Lateral surface area of one pillar.

$\longrightarrow 2 × 61.6$

$\longrightarrow 122.2$

Therefore,

Lateral surface area of two pillars is 122.2 m².

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