In a right triangle, the hypotenuse is always longer than the legs.
If this is a right triangle, then the legs measure 3 cm each and the hypotenuse measures 7 cm.
Now we use the Pythagoras theorem.
The sum of the squares of the lengths of the legs equals the square of the length of the hypotenuse.
The legs are a and b.
The hypotenuse is c.
a^2 + b^2 = c^2
3^2 + 3^2 = 7^2
9 + 9 = 49
18 = 49
18 = 49 is false. Since the side lengths make the Pythagorean equation false, the triangle is not a right triangle.
Answer: False