Find the area of the triangle below.Be sure to include the correct unit in your answer.15ft 6f 21ft

The given values seem to be the sides of a triangle. To find the area of a triangle using the lengths of the sides, we can use Heron's formula.

Heron's formula for the area of a triangle with sides of length a, b, and c is:

Area = sqrt[s(s - a)(s - b)(s - c)]

where s is the semi-perimeter of the triangle, given by:

s = (a + b + c) / 2

In this case, a = 15ft, b = 6ft, and c = 21ft.

First, let's find the semi-perimeter:

s = (15ft + 6ft + 21ft) / 2 = 21ft

Then, we can substitute a, b, c, and s into Heron's formula:

Area = sqrt[21ft(21ft - 15ft)(21ft - 6ft)(21ft - 21ft)] Area = sqrt[21ft * 6ft * 15ft * 0ft] Area = sqrt[0] Area = 0 square feet

So, the area of the triangle is 0 square feet. This suggests that the given lengths cannot form a triangle, as a triangle with an area of 0 is essentially a straight line.