Question

the radius of a circle is 7 cm circle is divided in 2 parts what's the perimeter of each semi circular part, only correct answers Varna I'd block
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Answer 1

Solution. Given that radius (r) = 7 cm. Thus, perimeter of each semicircular disc = 22 cm + 14 cm = 36 cm

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Answer 2

Answer:

When the circular disc is divided into two equal parts, we get two semi-circular discs.

Now, the perimeter of each semi-circular disc thus obtained is given by

1/2 Perimeter of the circle + Diameter

[Since diameter of the circle will also be a part of the semi-circular disc]

Perimeter of the semi-circle

1/2 × πr + 2r

πr + 2r = r(π+2)

7× (22/7+2)

36 cm

Step-by-step explanation:

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