Determine which of the following could be a right triangle

Question

A: 8ft, 13ft, 15ft

B: 7ft, 24ft, 25ft

C: 10ft, 12ft, 15ft

D: 4ft, 5ft, 6ft

Answer 1

does 15^2 = 13^2 + 8^2?

if so it's a right triangle. If not, it's not a right triangle.

take the largest side, square it and check whether it equals the sum of squares of the other 2 sides

225 doesn't = 169+64=233

B) 7, 24, 25 is a right triangle: 49+ 576 = 625

C) 10, 12, 15 is Not a right triangle: 225 doesn't = 100+144 = 244

D) 4, 5, 6 is Not a right triangle: 36 doesn't = 25+16 = 41

Only B is a right triangle