find the cost of polishing circular table top of diameter 1.6 if the rate of polishing is rupees 15 m square (take pie = 22÷ or upon 7
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EnnMushtaq:
Simply area of circular top of table =πr^2. 2here r is the radius and is equal to diameter/2 then use the value of r in the equation. Also on simplification u will get 2.011 which is the area of circular top of table and multiply it by 15 finally u will get 30.171 which is the total cost.
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Answer: Rs 30.17
Step-by-step explanation: If diameter is 1.6 then radius is d/2 = 0.8
Then A = 22÷7 × (0.8)^2 = 2.011 m^2
Again Cost = A × R = 2.011 × 15 = 30.17
Answered by
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hey
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area of circular table πr^2
radius = 16/20 = 4/5
= 22/7 ×4/5 ×4/5
=22/7×16/25
=22×16/25×7
=352/ 175
= 2.011 m^2
1 m^2 costs ₹15
2.011 m^2 costs ₹15×2.011 = ₹30.165
hope helped
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