from a circular sheet of radius 7 cm a circle of radius 2.1 cm is removed find the area of the remaining sheet
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Answer:
R = 7cm
r = 2.1 cm
Area of remaining sheet = area of entire sheet - area of removed sheet.
= πR²-πr²
= π(R²-r²)
= 22/7 (7²-2.1²)
= 22/7 (44.59)
= 140.14cm²
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