Question

find the cost of polishing a square table top of diameter 1.6 metre if the rate of polishing is 15 square metre​

Answer 1

Answer:

d=1.6m

r=0.8

ares of table top=22/7×0.8×0.8

=2.01

cost=2.01×15

=30.17

Answer 2

Answer:

area of square table=1.6x1.6=256m^2

cost of polishing=15^2

hence rate of polishing the table=256/15=17.0666...