Give the possible measure for the third side of a triangle if the other two sides are 7 and 11?

Which 2 sides?

Pythagorean Theorem = a^2 + b^2 = c^2

which side do you need?

The hypotenuse is the longest side.

for example 7^2 + 11^2 = c^2

then

49 + 121 = 170

Therefore, the answer is the square root of 170.

But you may have

7^2 + b^2 = 11^2 which would be 49 + b^2 = 121

so b would be the square root of 72

Can you show me the exact problem?