Question

If the perimeter of a semicircular plate is 36cm
its radius

Answer 1

Answer:

Let r be the radius of the protractor, then

Perimeter = πr + 2r

According to the question,

36 = πr + 2r

⇒  36 = r(22/7 + 2)

⇒   r = 7 cm.

∴  The diameter of the protractor is (2 × 7) cm = 14 cm.

hope it helps

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Step-by-step explanation: