The surface area of a cone is given by the formula:
Surface Area = πr(r + l)
where r is the radius of the base of the cone, and l is the slant height.
In this case, the diameter of the base is 14 inches, which means the radius is half of that, or 7 inches.
Using the given slant height of 20 inches, we can calculate the surface area:
Surface Area = 3.14 * 7(7 + 20)
= 3.14 * 7(27)
= 3.14 * 189
≈ 593.46
So, the surface area of the cone peak is approximately 593.46 square inches.
Eli is making a model castle out of clay. One of the roof peaks is in the shape of a cone with a diameter of 14 inches and a slant height of 20 inches
What is the surface area of the cone peak? Round your answer to the nearest hundredth. Use 3.14 for pi.
1 answer