Solutions
To solve this problem we have to use the Pythagorean theorem. You can only use the Pythagorean theorem in Right Triangles. The longest side of the triangle is called the "hypotenuse". C² is the longest side so it is the hypotenuse . To calculate c² we have to do α² + β² = c².
Given
Side (A) = 10 in
Side (B) = 8 in
Side (C) = unknown
The length of the third side must be greater than 0 but less than 18in
10-8 < s < 10+8
2 < s < 18
17 in is the correct answer
