i need help sovling this problem.
This equation is for the area of a triangle given it's base and height.
I assume you mean alternative equations.
In that case here are two others.
1. A = xy sin θ
Here x and y are the lengths of two sides and θ is the angle between those two sides.
Based on the SAS property of triangle congruence.
2. A = √[s(s-a)(s-b)(s-c)]
Here a, b, and c are the lengths of the three sides, and s = (a+b+c)/2 is the semiperimeter.
This is called Heron's Formula and is based on the SSS property of triangle congruence.