Question

Pls help!! i don’t get it at all

Answer 1

9

Explanation:

We can answer this problem by using the Pythagorean theorem, which goes as follows:

a² + b² = c²

a & b are the legs (sides adjacent by 90 degrees) and c is the hypotenuse ("longer" side or side across from the 90° angle)

We plug stuff in like this, and then solve:

Formula: a² + b² = c²

Plug in: 10² + b² =
`√(181)`²

Square root and square cancel each other out: 10² + b² = 181

Square the 10: 100 + b² = 181

Subtract 100 from both sides: b² = 81

Square root of both sides: b =
`√(81)`

Square root of 81: b = 9

Leaving us with our answer. I hope this helps, have a nice day :)