Medium
In a right triangle, the hypotenuse measures 58 cm and one leg measures 40 cm. Find the length of the other leg.
Explanation
Explanation
By the Pythagoras theorem, (hypotenuse)² = (leg₁)² + (leg₂)². Here 40² + 42² = 1600 + 1764 = 3364 = 58², confirming the sides 40, 42, 58 form a right triangle so the missing leg is √(58² - 40²) = √1764 = 42 cm.
PRO TIP
Re-check your working by substituting the answer back into the original question.