Answer:
D
Step-by-step explanation:
When you have a right angle triangle, the area is found by multiplying the 2 shorter legs together and dividing by 2. The hypotenuse does not come into the question unless you have to find one of the shorter legs.
Base = 4x^2
Height = 8x^2
Area = 1/2 * b * h
Area = 1/2 * 4x^2 * 8x^2 Multiply the coefficients together
Area = 1/2 * (4*8) * x^2 * x^2
Area = 1/2 * 32 * x^2 * x^2 Add the powers of x
Area = 16 x^(2 + 2)
Area = 16 x^4
Answer
D
