Question

The length of the hypotenuse of a right triangle is 157 units. The length of one leg of the triangle is 132. Lara wrote the following step to find the length of the unknown leg:

Length of the unknown leg = 1572 − 1322 = 24,649 − 17,424 = 7,225 units

Which statement best explains whether Lara's step is correct or incorrect?

It is correct because the length of the unknown side is the difference of the lengths of the sides.
It is correct because the length of the unknown side is the difference of the squares of the sides.
It is incorrect because the length of the unknown side is the

Answer 1

@zepdrix

Answer 2

hint:
In a right angled triangle with sides a, b and c where c is the longest side (hypotenuse), the length of a shorter side is given by the Pythagoras theorem as:
\(a=\sqrt{c^2-b^2}\)

Answer 3

C?

Answer 4

Sorry, I do not work with choices. It's your job to choose the right choice.
I do verify answers if they are presented in a sentence, possibly with explanations.