A right triangle has one leg with a length of 30 and a hypotenuse with length of 35. What is the length of the other leg to the nearest whole number?

Use the pythagorean theorem.

a^2 + b^2 = c^2

a and b are the legs of the triangle while c is the hypotenuse.

So,

30^2 + b^2 = 35^2

b^2 = 1225-900

b = sqrt (325)

b = 18.028

The length of the other leg is 18 (to the nearest whole number)