A right triangle has legs 20 cm and 21 cm. What is the length of its hypotenuse?
Note
Use the Pythagorean theorem: leg² + leg² = hypotenuse². Here 20² + 21² = 400 + 441 = 841, so the hypotenuse is 29 cm.
A right triangle has legs 20 cm and 21 cm. What is the length of its hypotenuse?
Use the Pythagorean theorem: leg² + leg² = hypotenuse². Here 20² + 21² = 400 + 441 = 841, so the hypotenuse is 29 cm.