Question

Find the circumference off a semicircular shape on a line of length 14 cm​

Answer 1

Answer:

Circumference of semicircle = 22cm

Step-by-step explanation:

Length of semicircle = Diameter of circle = 14cm

Circumference of a circle = 2$\pi$r

r = radius = Diameter/2

So, radius = 7cm

$\pi$ = 22/7

So,  2$\pi$r = 2 × 22/7 × 7

7 and 7 cancel each other, and so, we get 2 × 22 = 44

∴ Circumference of the circle = 44cm

∴ Circumference of semicircle = (Circumference of circle/2)

∴ Circumference of semicircle = 22cm

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Answer 2

Answer:

since, length of line = diameter =14 cm , radius (r) = 7cm

Step-by-step explanation:

since, circumference of semi circular shape = 2πr/2=πr = (22/7)*7 = 7 cm