Calculate Distance DF in Parallelogram ABCD Given AB=8, BC=16, BE=10

Question

Look at the parallelogram ABCD.

Calculate DF using the following:

$AB=8$

$BC=16$

$BE=10$

00:00 Find DF

00:04 We'll use the formula for calculating the area of a parallelogram (base times height)

00:08 2 possibilities to calculate, there are 2 heights

00:13 We'll substitute appropriate values according to the given data

00:24 Opposite sides are equal in a parallelogram

00:29 We'll substitute and solve, compare to the second formula

00:36 Isolate DF

00:40 And this is the solution to the question