if perimeter of a semicircle is 36cm find its of radius
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Answered by
2
Answer:
7cm
Step-by-step explanation:
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.
Answered by
7
diameter = 7 × 2 = 14
radius = 7
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