Question

Find the area and perimeter of the semi circle 7cm

Answer 1

Answer:

r=7

Area of Semi-circle = πr ^2/2

= 22/7×49/2

=77cm ^2

Answer 2

Answer:

77 cm² and 154 cm

Step-by-step explanation:

Area of circle = (πr²)/2 (since semicircle)

i.e

=> 22/7 × 7² ÷ 2

By solving:-

=> 22×7/2

=> 11×7

=> 77 cm²

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Perimeter of Circle:- (2πr)/2 (since semicircle)

=> 2 × 22/7 × 7² ÷ 2

By solving:-

=> 44×7/2

=> 22×7

=> 154 cm

Remember The Units.