Question

Find the perimeter with detail as soon as possible​

Answer 1

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HerE IS YouR AnsweR---



[This figure consists 2 semi-circles and 1 rectangle]

Given dimensions of semi-circle ---

Diameter of semi-circle= 7cm ---(d)

Radius of semi-circle= $\frac{7}{2} = 3.5 \: cm$

So, perimeter of 1 semi-circle =

$\pi \: r \: + d$
$= \frac{22}{7} \times 3.5 + 7 \\ \\ = \frac{22}{7} \times \frac{35}{10} + 7 \\ \\ = 11 + 7 \\ \\ = 18 \:cm$

therefore , the perimeter of another semi-circle is also be 18 cm

therefore , the perimeter if both semi-circles = 18 + 18 = 36 cm

Now,Given dimensions of the rectangle--

length of rectangle= 14 cm---(l)

breadth of rectangle = 7 cm---(b)

therefore , the perimeter if rectangle=

$2(l + b) \\ \\ = 2(14 + 7) \\ \\ = 2(21) \\ \\ = 42 \: cm$

so, now , the perimeter of whole figure

= perimeter of both semi-circles +perimeter of rectangle

= 36 + 42

= 78 cm

therefore , the perimeter of whole figure is 78 cm.

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