Consider the reduction of the triangle.
2 answers:
You might be interested in
<h2>Answer:</h2>
The radius of the cone is:
The total area of cone is given by:
where r is the radius of the cone and l is the slant height of the cone.
and the lateral area of cone is given by:
Hence, from equation (1) and (2) we have:
i.e.
i.e.
Formula for slope: 
Plug in points given:
Slope:
Plug in points given:
Slope: