Question

Find the exact length of the third side.

Answer 1

≈ 10

Explanation:

You can use Pythagorean Theorem to solve this:

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

Plug in the numbers given:

`2^(2) + b^(2) = 10^(2)`

4 +
`b^(2)` = 100

Subtract 4 from both sides:

4 +
`b^(2)` = 100

-4 -4

_________

`b^(2)` = 96

Square root both sides:

`√(b^2) = √(96)`

b = 9.79

b ≈ 10