Answer:
39 sq cm
Explanation:
you need to find out the area of the entire rectangle, which is 9x5, or 45
now subtract out from 45 the area of the triangle
the triangle is a right triangle and we can use the pythagorean theorem to find the base is 5
we can calculate the height as 12/5
since area (triangle) is 1/2(base)(height) we get:
1/2(5)(
) which gives us 6
so area of shaded region is 45-6, or 39