191k views
5 votes
What is the area, in square feet, of the shaded region?

What is the area, in square feet, of the nonshaded region?

What is the area, in square feet, of the shaded region? What is the area, in square-example-1

1 Answer

4 votes
Draw a line going from the intersection of the 2 foot line going up and the 2 foot line going across. Draw this line so it is parallel to the 16 foot line at the bottom.

The orange figure is now cut into 2 pieces. The bottom piece is a rectangle and the top piece is a trapezoid.

Trapezoid
========
The area of a trapezoid = (a + b)*h/2; a and b are the parallel lines. h = 2 + 8 = 10 feet
a = 1
b = 8 - 2 -2 = 4 feet. You are going to have to draw the diagram carefully to get this answer.
a is on the right side of the trapezoid. b is on the left side.
h = 8 + 2 = 10 feet

Area = (1 +4)*10/2 =25 square feet.

Rectangle
=======
L= 8 feet
w = 2 feet
A = L * w
Area= 2 *8 = 16 square feet.

Total Area Orange
==============
Area = 16 + 25 = 41 square feet

Area of the Black Area
=================
Area = L*W - 41 Square feet
Area =16 *8 - 41 = 87 square feet

User RamC
by
9.1k points