Answer:
1.5
Explanation:
Use the Pythagorean Theorem. A^2 + b^2 = c^2
A and b being the sides and C being the hypotenuse.
2.5^2 - 1.5^2 = 4
Square root of 4 is 2.
Then you use the area of a triangle formula. 1/2 * base * height = Area of a triangle.
1.5 * 2 * 0.5 = 1.5