Question

find the length of the right triangle

21, 20 and x

Answer 1

To find the length of the right triangle side x, we can use the Pythagorean theorem. The theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

In this case, the lengths of the two given sides are 21 and 20, and we are trying to find the length of the third side, x.

So, we have:

x^2 = 21^2 + 20^2

Simplifying:

x^2 = 441 + 400

x^2 = 841

Taking the square root of both sides:

x = √841

x = 29

Therefore, the length of the right triangle side x is 29.