Five Things You Need to Know About Algebra, Part I

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(C)Copyright 2015, C. Burke.

Unless they want the third side rounded to the nearest tenth or expressed in simplest radical terms -- then you're on your own!

By the way, every multiple of the 3-4-5 right triangle has the same exact shape. They are similar figures so there angles are the same. And those angles will be 53 degrees (across from the "4" side) and 37 degrees (across from the "3" side). But show your Trigonometry work anyway like you didn't already know the answer in advance.