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Find the area of a circular ring whose external and internal diameters are 10 cm and 4 cm respectively?

Asked by hskumbhkar 28th November 2018, 7:59 PM
Answered by Expert
Answer:
Area of ring = (π/4) [ D2 - d2 ] = (π/4) [ 102 - 42 ] = (π/4) × 14 × 6 ≈ 66 sq.cm
 
D and d are external and internal diameter respectively
Answered by Expert 28th November 2018, 11:02 PM
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