Question

cost of paving a circular room at the rate of rupees 2.50 per square metre is rupees 1540 find the cost of fencing the room at the rate of ruppees 6 per metre.

please give solution i will give it a brainlist​

Answer 1

Answer:

528Rs

Step-by-step explanation:

Area = total cost

cost perm^2

Area = 1540

2.50

Area = 616m^2

Area = πr^2

= 22 x r^2 = 616

7

= r^2 = 616 x 7

22

= r^2 = 196

= r = 14m

Circumference of the circle = 2πr

= 2 x 22 x 14

7

= 2 x 22 x 2

= 88cm

Cost per metre for fencing = 6Rs

Total cost for fencing = 6 x 88 = 528Rs

Hope this answer is helpful..........