Asked by Belinda
A golden ring is 20mm in diameter and has a 14mm hole in the middle. What is the area of the ring? [Take π=22/7].If 1mmsquare of gold costs 5gh, calculate the cost of the ring
Answers
Answered by
oobleck
a = π(10^2 - 7^2) mm^2
cost = a*5
cost = a*5
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