Question

Find the third side, round the nearest 10th

Answer 1

11.9

Explanation:

This is a right triangle so I can solve this with the pythagorean theorem.

Set up the equation 22²+x²=25² x would be the third side

Simplify, 484+x²=625

Subtract from both sides 484-484+x²=625-484

x²=141

Find the square root of 141 to get x

The square root of 141 is approximately 11.9 rounded to the nearest tenth.

Answer 2

11.9

Explanation:

Pythagorean theorem:

`a^2+b^2 = c^2`. where a and b are the sides and c is the hypotehnus (the side in front of the 90 degree angle)

`22^2 + b^2 = 25^2\\484 + b^2 = 625\\b^2 = 625-484\\b^2 = 141\\b = √(141) \\b = 11.9`