Pythagorean Theorem.
Mysterious Island.
In Pythagorean theorem, triangle should be right angled.
Longest side of triangle is opposite to the 90 degree angle.
It is called the hypotenuse.
These two adjacent sides are called the legs of the triangle.
I am Pythagoras.
By Pythagorean theorem, AB square plus BC square is equal to AC square.
If you want to get out, you have to use Pythagorean theorem.
Length of AB is equal to 3 meters.
Length of BC is equal to 4 meters.
By my theorem, you need to find the length of AC.
By Pythagorean theorem, AB square plus BC square is equal to AC square.
Substituting AB is equal to 3 and BC is equal to 4.
AC square is equal to 3 square plus 4 square.
AC square is equal to 9 plus 16.
AC square is equal to 25.
Therefore, AC is equal to 5.
Hence, length of AC is equal to 5 meters.