Question

Using the formula for circumference of the circle with radius r, frame the
formula for finding circumference of
1) semi-circle, 2) quadrant. (with same radius)

Answer 1

Answer:

Circumference of semi circle= pi×radius

Circumference of quadrant= pi×radius÷2

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Answer 2

Step-by-step explanation:

circumference of circle = 2πr

Now,

Circumference Of semicircle = 2πr/2 + d

= πr+2r

circumference of quadrant = (πr + 2r)/2

= (π\2 +2)r