Question

what is the perimeter of a semi circle with a diameter of 10.5

Answer 1

Answer:

Perimeter of semi-circle = 16.5 cm.

Step-by-step explanation:

Given that,

Diameter of the semi-circle, d = 10.5 cm

So, Radius of the semi-circle, r = 10.5/2 cm

We know that,

Perimeter of a Circle = 2πr

So, Perimeter of a semi-circle = 1/2 × 2πr

= πr

= 22/7 × 10.5/2

= 16.5 cm

Hence, Perimeter of the semi-circle with diameter 10.5 cm is 16.5 cm.

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