Question

find the cost of polishing a circular table top of diameter 1.6m,if the rate of polishing is rs15/m square.(take pir = 3.14)

Answer 1

here you go ☆☆

▪r = 0.8 m
▪area of circle = 2pie r^2

▪2 × 3.14 × 0.64

▪401.92 m^2

▪$<b> cost of polising 1 msqua. = 15$
▪$<b> cost of polishing 401.92m = 401.92 x15 = 6028 .8$


hope it helps:)

Answer 2

π=3.14

d=1.6m

r=0.8m

area of table top=πr²

=3.14x0.8x0.8=2.0096(approx.)

cost of polishing=15x2.0096=₹30.144

Hope this helps!