Question

John wants to put a fence around his property which is as shown. Find
the cost of fencing it at the rate of Rs. 20 per meter.

Answer 1

Answer:

Rs. 29880

Step-by-step explanation:

since, area of triangle =

$\sqrt{s {s - a}{s - b}{s - c}$

s=perimeter/2

=44+56+80/2

=90

1. $\sqrt{90(90 - 44)(90 - 56)(90 - 80)}$
2. $\sqrt{90 \times 46 \times 34 \times 10}$
3. $180 \sqrt{69}$
4. $180 \times 8.3$

$1494$

since, cost of 1m = rs20

so, cost of 1494m = 1494*20

= 29880 rs

Answer 2

Answer:

answer is ropees 3600

Step-by-step explanation:

firstly add 44m+56m+80m =180

to find the cost multiply 180m x 20 rupees=3600