Physics
posted by Lauren .
The hypotenuse of a right triangle is 29.0 centimeters. The length of one of its legs is 20.0 centimeters. What is the length of the other leg?

X^2 + Y^2 = (29)^2.
(20)^2 + Y^2 = 841.
Y^2 = 841  400 = 441.
Y = 21 cm.
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