Question

In the figure shown, ABCD is a parallelogram, AC = 16, and BD = 30 inches determine BC.

Answer 1

If it looks like this:

A -------------------- B
|                            |
|                            |
|                            |
C -------------------- D

Then BC is the hypotenuse of a right triangle with sides 16 and 30. Using the Pythagorean Theorem you can solve for the length of the hypotenuse:

$h^2 = 16^2 + 30^$
$h= \sqrt{256+900}$
$h =34$