Question

the area of a circular field is 3850sq.m. the cost of fencing it at Rs 3.50 per meter is​

Answer 1

Answer:

₹770

Step-by-step explanation:

Area of circle = 22/7 × r², where r is the radius.

Given, area = 3850 m²

=> 22/7 × r² = 3850

=> r² = 3850 × 7/22

=> r² = 1225

=> r = 35 m

Circumference of circle = 2 × 22/7 × 35 m = 220 m

Cost of fencing per meter = ₹3.50

=> Total cost of fencing = ₹3.50 × 220 = ₹770