Question

Find the length of the unknown side round your answer to the nearest 10th

Answer 1

A. 20

Explanation:

`a^(2) + b^(2) = c^(2)`

Plug in the numbers

`15^(2) + b^(2) = 25^(2)`

Simplify the equation

225 + b = 625

Subtract both sides by 225

625 - 225 = 400

Your equation should look like

b = 400

Because you squared it, now you have to get it back to the formula you started with first. To do this, just find the square root.

The square root of 400 is 20

`15^(2)+ 20^(2) =25^(2)`