Question

which two - dimensional figure will create a cone with a radius of 3.5 and a height of 7?

Explanation:

Step1: Recall cone - creation principle

A cone is formed by rotating a right - triangle around one of its legs. The radius of the cone is the length of the non - rotated leg and the height of the cone is the length of the rotated leg.

Step2: Identify the correct triangle

The cone has a radius of 3.5 and a height of 7. When a right - triangle is rotated to form a cone, the radius of the base of the cone is the length of one leg of the right - triangle and the height of the cone is the length of the other leg. So, we need a right - triangle with legs of lengths 3.5 and 7.

Answer:

The second triangle (the right - triangle with base 3.5 and height 7)