Question

THE RADIUS OF A CIRCULAR GARDEN IS 49 m. WHAT WOULD BE THE COST TO PUT A TWO ROUND FENCE AROUND THE GARDEN AT THE RATE OF RS. 25 PER SQUARE METRE?

Answer 1

Given radius of circular garden =56m
Perimeter of garden =2πr=2π×56
Perimeter =112πm
Now for four rounds =112π×4
4 perimeter =448πm.
Cost of fencing =40 Rs./m
Total cost of fencing =40×448π
=17920πRs.
Total cost =56,267.8 Rs.
Total cost of fencing is 56,268.8 Rs.