Compute the maximal area obtainable if we assume that the farmer builds a field in the shape of an isosceles triangle, where the two equal sides are the fenced sides, and the third side is the river.

The maximal area obtainable if we assume that the farmer builds a field in the shape of an isosceles triangle, where the two equal sides are the fenced sides, and the third side is the river is determined using the same formula used in getting the area of an isosceles triangle.

THE FORMULA

Multiply the base (length of the side of the river) and the height of the triable at its tallest point, then divide the product in half.

A = 1/2 x b x h, where b is the base, and h is the height.

Plug your values into the formula to find the area. 

here is your mark brainliest

168

step-by-step explanation:

i am pretty sure that the answer is 168