Rectangle Side Length: Using Pythagorean Theorem with AC=13 and AB=12

Question

ABCD is a rectangle.

AC = 13

AB = 12

Calculate the length of the side BC.

Video Solution

Solution Steps

00:00 Calculate BC
00:03 Side lengths according to the given data
00:11 Let's use the Pythagorean theorem in triangle ABC
00:15 We'll substitute appropriate values and solve for BC
00:23 Isolate BC
00:38 And this is the solution to the question

Step-by-Step Solution

When writing the name of a polygon, the letters will always be in the order of the sides:

This is a rectangle ABCD:

This is a rectangle ABDC:

Always go in order, and always with the right corner to the one we just mentioned.

Answer

5