Use a conversion factor to convert from yards to feet. The area of a trapezoid is one half of the product of its height and the sum of its bases.
648ft^2
Practice makes perfect
We are told that a trapezoid has base lengths of 5 and 7 yards and a height of 12 yards. Let's see the diagram!
Before we substitute these two values into the formula for the area of a trapezoid, let's convert the yards into feet. Converting between yards and feet will involve using a conversion factor.
3ft/1yd
Let's convert the measurements of our trapezoid!
Yards
Conversion
Feet
Bottom Base
7
7* 3
21
Top Base
5
5* 3
15
Height
12
12* 3
36
We found that the bottom base of the trapezoid is 21 feet, the top base is 15 feet, and the height is 36 feet. Now we can substitute these values into the formula for the area of a trapezoid. Let's do it!
