Question

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

Answer 1

A = 189 yd²

Explanation:

The area (A) of a triangle is calculated as

A =
`(1)/(2)` bh ( b is the base and h the perpendicular height )

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

A =
`(1)/(2)` × 21 × 18 = 10.5 × 18 = 189 yd²