Answer:
137 square feet of tile
Step-by-step explanation:
First, I will solve for the shaded area:
A=l*w
A=20*10
A=200
Next, I will solve for the triangle
The formula for a right triangle is A=1/2*b*h, and this isosceles is divided into 2 right triangles, so I can use this and multiply by two:
A=1/2*b*h*2
A=b*h (the 1/2 and two cancel each other out)
A=9*7
A=63
Then, we subtract the area of the triangle from the area of the whole rectangle to get the area of the shaded area:
200-63=137
So, the area of the shaded area is 137 square feet of tile.
