Question

) A triangular plot has sides 122m, 22m and 120m . Find the cost of laying lawn at the rate of

Rs. 500 per m2​

Answer 1

Answer:

Rs. 6,60,000

Step-by-step explanation:

$semi-perimeter = \frac{a+b+c}{2}\\\\semi - perimeter = \frac{122+22+120}{2}\\\\semi - perimeter = \frac{264}{2} = 132 m$

$area = \sqrt{s(s-a)(s-b)(s-c)}\\ =\sqrt{132X10X110X12} \\ = 1320 sq.m$

$500/sq.m\\Therefore,\\500X1320 = 6,60,000$

Answer 2

Step-by-step explanation:

hope it helps you.｡◕‿◕｡