Question

Give me the formula for the following question
1) radius of circle when perimeter is given
2)perimeter of semi-circle.

Answer 1

Answer:

2πrand πr+diameter

Step-by-step explanation:

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Answer 2

Answer:

r (radius) = C (circumference) / (2 x pi x r)

Perimeter (semicircle) = (2 x pi x r) / 2