Question

What is the area of DEF shown in the figure?

Answer 1

The area of triangle DEF is
`189\ yd^2`

Explanation:

we know that

The area of a triangle is equal to

`A=(1)/(2)(b)(h)`

where

b is the base of triangle

h is the height of triangle

In this problem

In the triangle DEF we have

`b=21\ yd\\h=18\ yd`

substitute the values in the formula

`A=(1)/(2)(21)(18)`

`A=189\ yd^2`