Which set of numbers represent the lengths of the sides of a right triangle?

A - 9, 10, 11

B - 8, 12, 16

C - 16, 32, 36

D - 3, 4, 5

The basic deal is a^2 + b^2 = c^2

A = incorrect, 81 + 100 does not equal 121.

B = incorrect, 64 + 144 does not equal 256.

C = incorrect, 256 + 1024 does not equal 1280

This leaves D.

D must be a right triangle.