CBSE Class 9 Answered
A
triangular park has sides 120 m, 80 m, 50 m. A gardener has to put a fence
all around it and also plant grass inside. How much area does he need to
plant? Find the cost of fencing it with barbed wire at the rate of Rs 20 per
meter leaving a space 3 m wide for a gate on one side.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Here,
Therefore, area of park
Perimeter of park = 50 + 80 + 120 = 250 m
Thus, length of wire needed = 250 - 3 = 247 m
So, cost of fencing = Rs 20 247 = Rs 4940
Answered by | 04 Jun, 2014, 03:23: PM
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