Question 852498
we need to use Heron's formula for the area of a triangle given three sides
This formula is Area = SQRT(s(s-a)(s-b)(s-c)), where s=(a+b+c)/2 or perimeter/2.
first calculate the perimeter of the triangle divided by 2
P = (12 + 16 + 22) / 2 = 50 / 2 = 25
so s = 25, therefore
A = square root(25(25-12)(25-16)(25-22))
A = square root(25*13*9*3) = 93.67 approx 94 square meters of turf