Question

The total cost of fencing a circular field at ruppes5 per metre is ruppes880. Find the:
(a) Circumference of the field.
(b) Radius of the field.
(c) Area of the field.​

Answer 1

Answer: (a) 176 meter (b) 28 meter (c) 2464 meter  

Step-by-step explanation:

(a) Let the circumference be x meters

   Cost of fencing is Rs.5 for 1 meter

   Cost of fencing for x meters is Rs.880

   ∴ Required Equation is : x = 880/5

   ∴ x = 176 meters

(b) We know that Circumference = 2πr = 176 meters

    ∴ r = 176/2π = 28 meters

(c) Area of circle = π$r^{2}$ =  π x 28 x28 = 2464 sq.meters