Question

The total cost of levelling a circular field at 10 per m’ is 13,860. Find the:
(a) Area of the field. (b) Radius of the field. (c) Circumference of the field.​

Answer 1

Answer:

a)

Cost of leveling field=13860

=10×area of field=13860

=area of field=13860/10

=area of field =1386

b)

we have,

area of field =1386

=πr²=1386

=(22/7)r²=1386

=r²=(1386×7)/22

=r²=441

=r=√441

=r=21

Radius of circular field is 21 units

c)

Circumference of the field:

=2πr

=2×(22/7)×21

=132 units