the radius of a wooden wheel is 21 cm. A circular piece of radius 14 cm has been cut from it. find the area of remaining portion?
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Answer:
44 cm²
Step-by-step explanation:
Bigger circle
radius of circle = 21 cm
Therefore , area =2*pie*radius
= 2. 22/7 . 21
=132 cm²
Smaller circle
radius of circle = 14 cm
area = 2*22/7*14
=88 cm²
Area of remaining portion
area left = (area of bigger circle) - (area of smaller circle)
= 132cm² - 88cm²
=44 cm²
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