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To solve this equation you need to use the pythagorean theorem which states that a^2+b^2=c^2 where c is the hypotenuse (the longest side). If c is the hypotenuse then you would do 9+16=c^2. Therefore you would find the square root of 25 which is 5. Therefore, if the unknown is the hypotenuse, your answer is 5!

*note: x^2 is equal to x squared

Q: If a triangle has 3 sides the numbers are 3 and 4 What is the third side?

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You need the measures of two sides and for the triangle to be a right triangle to figure out the third side.

The third side would be either 5 or 8,as an isosceles triangle has 2 equal sides.

Two sides of a triangle do not, automatically, give you the measure of the third side. Further information about the triangle is required.

The sum of two sides must be greater than the third.

Doesn't it depend on what type of triangle it is? And which sides you are measuring? And which side it's laying on?

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You need the measures of two sides and for the triangle to be a right triangle to figure out the third side.

The third side would be either 5 or 8,as an isosceles triangle has 2 equal sides.

Two sides of a triangle do not, automatically, give you the measure of the third side. Further information about the triangle is required.

The length of the third side of an equilateral triangle is the same as the lengths of both of the other two sides.

no it can not be eaual but it can be greater than The sum of the lengths of any two sides of a triangle is greater than the length of the third side.

If two sides of a triangle are equal in length to the third side, then the triangle is equilateral, and all angles are 60 degrees.

An isosceles triangle has 3 sides 2 of which are equal in length

Its third side.

It is an isosceles triangle that has two equal sides and the third side being different

The sum of two sides must be greater than the third.

Doesn't it depend on what type of triangle it is? And which sides you are measuring? And which side it's laying on?

The length of the third side is the same as the length of either of the other two sides.