Find the area of a triangle with legs that are: 15 m, 25 m, and 20 m.

This is a right triangle. We can demostrate it by applying the Pythagorean triple.

You get the hypothenuse (longest side) by the formula a ²+b² = c²

So plug in the values. a and b are the legs and c the hypothenuse.

15²+20² = 25²

225+400 = 625

625 = 625

To find the hypothenuse square root the result.

c = √625 = 25 m

It is a right triangle.

Now, the area formula is: (l*l) / 2 = (15*20) / 2 = 300/2 = 150m²