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15. What is the area of ADEF shown in the figure? Show your work.


15 What Is The Area Of ADEF Shown In The Figure Show Your Work class=

Sagot :

Answer:

A = 189 yd²

Step-by-step explanation:

The area (A) of a triangle is calculated as

A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )

Here b = DE = 21 , h = the line from F to DE = 18 , then

A = [tex]\frac{1}{2}[/tex] × 21 × 18 = 10.5 × 18 = 189 yd²