Answer:
90ft^2
Step-by-step explanation:
First find the area for the small rectangle on the side
The demensions are 6 by 3
multiply to get the are which is 18
now find the area of the triangle
Area of triangle = L*W/2
so you you find the bottom sides length which is 15-3 which is 12. (you minus 3 because thats part of the rectangle)
then you figure out the length which you can see the top half is 6 and then the then the other half of that line is 6 add them together and you get 12 as the length
now multiply the length and width 12*12= 144
now divide 144 by 2 and you get 72
add the area of the rectangle with the area of the triangle and you get 90ft^2
