Find the area of a triangle with base 20, height 7 and side 15.

To find the area of a triangle, you need to multiply the side of the triangle by the height drawn to it and divide the resulting value in half.

We know the height and base of the triangle, we find the area:

S = (h * ah) / 2 = (7 * 20) / 2 = 140/2 = 70.

Answer: 70



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