Question

Find the unknown side

length. Round to the
nearest tenth. 9 in and 7 in

Please explain how to solve.

Answer 1

The missing side length is 5.7

Explanation:

Using the pythagoream theorem you can find the missing side length of a right triangle.

The formula is
`a^(2) + b^(2) = c^(2)` where a and b are the lengths of the triangle legs and c is the hypotenuse.

So yours would be:

`7^(2) + x^(2) = 9^(2)`

Square the numbers:

`49 + b^(2) = 81`

Isolate b:

`b^(2) = 32`

Square root both sides:

`b=√(32)`

Simplify:

`√(32) = 5.7`