The radius of a circular brass plate is 20cm. Find the cost of polishing the top surface of 12 such plates at the rate of rupees 450 per sq. m. (Take π = 3.14)
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hey mate here is the answer of your question,
radius of the plate=20cm
total number of plates=12
rate=450 per sq. m
area of one plate= πr²
area= 3.14×(20)² =3.14×400= 1256cm²
area of 12 plates=12×1256=15072cm²
=1.5072m²
total cost=1.5072×450
total cost=rs.678.24
hope it helps
plz mark it the brainliest
radius of the plate=20cm
total number of plates=12
rate=450 per sq. m
area of one plate= πr²
area= 3.14×(20)² =3.14×400= 1256cm²
area of 12 plates=12×1256=15072cm²
=1.5072m²
total cost=1.5072×450
total cost=rs.678.24
hope it helps
plz mark it the brainliest
aditya182ace:
plz mark it the brainliest
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I think I don't know
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