ICSE Class 9 Answered
A triangular park ABC has sides 120m , 80m and 50 m .A Gardner dhania has to put a fence around it and also plant grass inside .How much area does she need to plant ? Find the cost of fencing it with barbed wire at the rate of ₹ 20 per metre leaving a space 3 m wide for a gate on one side .
Asked by aadrica.kanika | 17 Oct, 2018, 06:44: PM
Expert Answer
Now total boundary = 120 + 80 + 50 = 250 m
3 m for gate so, 247 m
so cost of fencing = 247 × 20 = 4940 Rs.
area of triangle can be given by heron's formula
Answered by Arun | 18 Oct, 2018, 12:48: PM
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