The perimeter of the semicircle is 19π cm if the diameter of the circle is 38 cm.
It is described as a set of points, where each point is at the same distance from a fixed point (called the centre of a circle)
We have a circle with diameter of 38 cm.
Diameter = 38 cm
The radius of the circle = 38/2 = 19 cm
Perimeter of the circle = 2πr = 2π(19) = 38π cm
Perimeter of the semicircle = 38π/2 = 19π cm
Thus, the perimeter of the semicircle is 19π cm if the diameter of the circle is 38 cm.
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