the perimeter of a circle of radius 7cm is 31cm. find the area of a sector ?
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area of circle = πr²
= 22/7 * 7 * 7
= 154cm²
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Step-by-step explanation:
Perimeter of a sector of circle =31 cm
Radius = 7 cm
Arc length = 31-(7+7) cm = 17 cm
Now, Area of sector = 1/2 ×Arc length × radius
1/2× 17×7 = 59.5 cm².
hope it may help you.
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