Math, asked by sr6050392, 7 months ago

5. Find the area and perimeter of a semicircle whose radius is 21 cm.​

Answers

Answered by jpmckevin
0

Answer:

it's 10

1

_

2

this is helpful follow me

Answered by rawatsanjay0125
2

Step-by-step explanation:

Area-

radius of semicircle = 21cm

area \: of \: semicercle =   \frac{\pi \: r ^{2} }{2}

then. = 22/7×21×21×1/2

= 11×3×21

= 693cm^2

peramiter-

radius of semicircle=21cm

perameter \:  of \: semicircle = \pi \: r

then. =22/7×21

=22×3

=66 cm

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