How to find the radius of a cone with just the lateral area and slant height ?

Question

The lateral area of a cone is 60pi m squared. The slant height is 15m. What is the radius?

Answer 1

Hi Morgan R.

You just use the formula for the Lateral Area which is typically

π*r*s where s is the Slant Height and π = pi

pi*r*s

You should have a formula for the Lateral Area of Cone in your text if not you can look it up online

60 = π15r

Just solve for the missing part

Hope this helps, do give it a try.