Question

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Answer 1

137 square feet of tile

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.

Answer 2

74 ft

Explanation:

because the formula for area of a triangle is 1/2 times the length times the height which on this one comes to be about 126 and 20 times 10 is 200, take 126 away from 200 and you get 74.