Question
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
a = π(10^2 - 7^2) mm^2
cost = a*5
cost = a*5
Related Questions
a drop of oil of radius 0-20mm spreads on a circular film of diameter 20mm on the water surface. Est...
A steel rod is 3cm in diameter at 25C. A brass ring has an interior diameter hole of 2.994cm at 25C....
A golden wedding ring is 20mm in diameter and has a 14mm hole in the middle
A. What is the area of...