Question

find the perimeter of the adjoining figure,which is a semicircle including its diameter.​

Answer 1

Answer:

Radius of the figure $= \frac{10}{2} = 5cm$

Area of a semi-circle

$= \frac{\pi {r}^{2} }{2}$

$= \frac{ \frac{22}{7} \times {5}^{2} }{2}$

$= \frac{11}{7} \times 25$

$= \frac{275}{7}$

$= 39.29 \: (approx)$

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Answer 2

ANSWER :-

Given that :-

• Shape = semicircle

• Diameter = 10 cm.

To find :-

• The Perimeter of semicircle.

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As we know that , Perimeter of the figure = Perimeter of semicircle + Length of diameter.

$= \frac{1}{2} \times \pi \: d + d \\ \\ \frac{1}{2} \times 3.14 \times 10 + 10 \\ \\ = 15.7 + 10 = 25.7cm$

Therefore, the perimeter of the figure is 25.7 cm