Question

Find the cost of fencing a rectangular park of length 10 m and breadth 5 m at the rate of? 10 per metre.
[hint:Find the perimeter]

Answer 1

Answer:

Fencing is done at the perimeter so, perimeter of rectangular park=2(l+b)=2(350+250)

⇒2×600=1200m

Rate of fencing per meter=Rs. 18.50

∴ Rate of fencing 1200 m =Rs.8.50×1200

=Rs.22,200

Answer 2

Perimeter of park = 2(10 + 5)

→ Perimeter of park = 2(15)

→ Perimeter of park = 30

→ Cost of fencing = Rs(39× 10)

→ Cost of fencing = Rs.300