Question

The total cost of levelling a circular field at 30 per m2 is 4,620. Find:
(a) area of the field.
(b) radius of the field.
(c) circumference of the field.​

Answer 1

Answer:

Let the radius of the circle be r.

Area of the circle is πr

2

Thus,

πr

2

×2=33957

=>r

2

=

2×22

33957×7

=>r

2

=5402.25

=>r=73.5 m

If the rate is Rs. 2.75, then the cost =2πr×2.75

=2×

7

22

×73.5×2.75

=Rs.1270.5

please brainlest mark