Question

If two sides of a triangle are 10 units and 13 units,a possible third side for the could be?

Answer 1

Pythagorean theorem:

a^2+b^2=c^2

substitute:

10^2+13^2=c^2

simplify:

100+169=c^2

simplify:

269=c^2

take the square root:

c=16.4

The answer is 16.4