The radii of two concentric circles are 19cm and 16cm ,find the area of the ring enclosed between them
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answer is 330 cm^2 hope u got it
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Area of Ring = 22 (R²-r²)/7
=22 (19²-16²)/7
=22 (361-256)/7
=22×105/7
=22×15
=330 cm²
akshar2:
it is better if u instead of squaring use the formula a^2-b^2=(a+b)(a-b) in your solution
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