Answer:
17.01 cm2
Explanation:
So what you do is you multiply the PERPENDICULAR height by the base. And since the height is perpendicular, a 90 degree angle will form. And Right Triangles are half of parallelograms, you wou divide the answer of what you got with the b*h.
6.3*5.4=34.02
34.02/2=17.01