Question

A cylindrical pillar is 500cm in diameter and 3.5m in height .find the cost of painting the curved surface of tge pillar at the rate of Rs 12.50 per meter square ​

Answer 1

Answer:

Rs 500

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Answer 2

a cylindrical pillar=500cm

change into m = 500/100

= 5m

curved surface area of cylinder =2πrh

=2×22/7×5×5×3.5

3.5 cancel 7 by two times

7 wala 2 cut 22 and remains 11

then.,

22×5×5

110×5

550

cost of painting of 12.50 per m² =550×12.50

=6875₹cost