find the length of the hypotenuse of a right triangle with legs of 20 and 21 CM?

Question

please show some work too

Answer 1

To answer this question, you would use the Pythagorean Theorem, which is a^2 + b^2 = c^2.

20 and 21 are a and b, and c is the hypotenuse.

So, 20^2=400 and 21^2 = 441. 400+441=891.

Finally, you get 891=c^2, so the square root of 891 is equal to c. Therefore, c (the hypotenuse) is equal to 29 centimeters.

Answer 2

Pythagorean theorem is used to solve right triangles: a^2 + b^2 = c^2. Plug in what you know and solve for what you don't.

20^2 + 21^2 = c^2

841 = c^2
c = 29

so your answer is 29 cm