Question

What is the length of the hypotenuse of the triangle?

Answer 1

h² = 7² + 3²
h² = 49 + 9
h² = 58
h = √58 cm

Answer 2

For this, you will be using the pythagorean theorem, which is $leg^2+leg^2=hypotenuse^2$ . In this case, 3 and 7 are the hypotenuse and AB is the hypotenuse. Our equation is $3^2+7^2=AB^2$

Firstly, solve the exponents: $9+49=AB^2$

Next, combine 9 and 49 to get $58=AB^2$

Lastly, square root both sides to get $\sqrt{58}=AB$

In short, the answer is √58 cm, or the last option.