22 A plot of land is in the shape of a right-angled triangle whose
base and perpendicular are 65m and 72m respectively. If its
boundary is made by using 4 round iron wire, find the total cost of
the wire at the rate of Rs. 12 per meter. (Ans: Rs. 11,232)​

Given :

▪︎A plot of land is in the shape of a right angled triangle.

▪︎Length of base of triangle = 65 m

▪︎Length of perpendicular of the triangle = 72 m

We know that :

The hypotenuse or length of the third side :

Thus, the length of the hypotenuse of the plot = 97 m

Perimeter of the plot :

Thus, the perimeter of the plot = 234 m

Boundary of the plot is made by = 4 wires

Length of wire needed :

Thus, quantity of wire needed = 936 m

Cost of 1 m of wire = Rs.12

Cost of 936 m of wire :

▪︎The total cost of wire = Rs.11,232

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step-by-step explanation:

the correct is answer is a 9-sided polygon!