Question

The hypotenuse of a right triangle is 50 mm long. One leg of the right triangle is 30 mm long. What is the length of the other leg?

Answer 1

a^2+b^2=c^2

30^2+b^2 = 50^2

900+b^2=2500

b^2 = 2500-900

b^2 = 1600

b = sqrt(1600)

b = 40


So the length of the other leg is 40 mm

Answer 2

To get to the answer quicker, notice that this 30, 40, 50 triangle has lengths that correspond to a 3, 4, 5 triangle

Answer 3

your officially my savior :P