Question

The legs of a right triangle are 18 centimeters and 80 centimeters long. What is the length of the hypotenus: 82 or 85 or 89 or 98

Answer 1

The hypotenuse is equal to 82 centimeters.

Explanation:

Using the Pythagorean theorem (a^2 + b^2 = c^2), which states that the legs of a right triangle (a and b) squared, equal the hypotenuse squared, we can plug in the values of the legs of the right triangle into spots a and b. This gets us the equation 80^2 + 18^2 = c^2. We can then square the values to get 6400 + 324 = c^2. We then get 6724 = c^2, and then take the square root of both sides to get the value of c, the hypotenuse. This gets us c = 82, so the hypotenuse is equal to 82 centimeters.

Answer 2

82

Explanation:

1.) Recognize that this is the Pythagorean Triple 9, 40, 41, just multiplied by two (9*2 = 18, 40*2 = 80).

2.) Now, to find the third number, we just multiply 41 by 2 to get 82.