Question

a circular platform of radius 33 m has a circular path of 7 m width laid inside it. if the path is to befitted with mosaic tile,find the total cost of tiling at the rate of RS 20per sq.m.​

Answer 1

Circumference of circle = 2pie r

= 2×22/7×33

= 1452/7

=27

cost of tilling =27×20

=540

Answer 2

Step-by-step explanation:

to find this we need to subtract the area of circle inside the path form the total area of circle (the biggest one of 33m radius)

total area of the circle =22/7*33*33=23958/7

area of circle formed inside the path of 7 m =22/7*(33-7)(33-7)

22/7*26*26=23958/7

now to find the area of the path we sub the biggest circle and smallest circle

=23958/7-14872/7

=9086/7=1298m square

to find the cost of tiling

1298*20

=25960rupees

hope it helped..