Question

find the perimeter of each of the following shape take pi equal to 3.14
Answer - 132.80​

Answer 1

Area = 40m× 15m+ 22/7×½×20×20m²= 600m²+ 628.5m²

= 1128.5m²

Answer 2

Perimeter Of Figure = 132.8 m

Explanation:

GIVEN

Length = 40 m

Breadth = 15 m

Diameter = 40 m

Radius = Diameter / 2 = 40 / 2 = 20 m

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TO FIND

Perimeter Of Figure

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We know that,

Perimeter Of Rectangle = 2 × ( Length + Breadth )

Perimeter Of Rectangle = 2 × ( 40 + 15 )

Perimeter Of Rectangle = 2 × 55

Perimeter Of Rectangle = 110

Perimeter Of Rectangle = 110 m

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We know that,

Perimeter Of Semicircle = π × r + 2 × r

Perimeter Of Semicircle = 3.14 × 20 + 2 × 20

Perimeter Of Semicircle = 62.8 + 40

Perimeter Of Semicircle = 102.8

Perimeter Of Semicircle = 102.8 m

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Now let's find the perimeter of figure

We know that,

Perimeter Of Figure = Perimeter Of Rectangle + Perimeter Of Semicircle - 80

Perimeter Of Figure = 110 + 102.8 - 80

Perimeter Of Figure = 212.8 - 80

Perimeter Of Figure = 132.8

Perimeter Of Figure = 132.8 m