Question

The radius of a circular brass plate is 20cm. Find the cost of polishing the top surface of plate at the rate of 450per sq.m​

Answer 1

Step-by-step explanation:

area of circle πr²=22/7×20²=22/7×400=1257cm.sq

dividing by 100 ,

we get=1257/100=12.57 sq.m

cost per sq.m =450/-

:.total price= 12.57×450=5,656/-

cost of polishing the top surface of plate at the rate of 450 per sq.m=rupees 5,656/-

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Answer 2

Answer:

5656

Step-by-step explanation: