Question

What is the missing side length?
7
10
x

Answer 1

I need a bit more context — is this a triangle? a right triangle? — but here are the common interpretations:

- If 7 and 10 are the legs of a right triangle and x is the hypotenuse:
x = sqrt(7^2 + 10^2) = sqrt(149) ≈ 12.206

- If 10 is the hypotenuse and 7 is one leg (x the other leg):
x = sqrt(10^2 − 7^2) = sqrt(51) ≈ 7.141

- If they are the three sides of a (non‑right) triangle, the triangle inequality gives:
|10 − 7| < x < 10 + 7 → 3 < x < 17

Tell me which situation applies and I’ll give a final numeric answer.