Question

True or false
In a right circular cone, height, radius and slant height do not always be the sides of a right triangle.

Answer 1

This is the solution given on the site you mentioned. Clearly, they have proved thatheight, radius and slant height satisfy the Pythagoras theorem, and hence they form a right angled triangle. (Inverse of Pythagoras theorem). Actually, they have solved it correctly, just the thing is, they have written the answer incorrectly. The correct answer will be False.