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![Geometry worksheet to help students use formulas to find surface areas of right cylinders and cones in terms of pi and as approximations.](https://static.wixstatic.com/media/49609e_707cf141192e47558ebe54ddfa9d1751.jpg/v1/fill/w_404,h_552,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/49609e_707cf141192e47558ebe54ddfa9d1751.jpg)
![Geometry worksheet to help students use formulas to find surface area of spheres and hemispheres, and find radii of spheres with given surface areas.](https://static.wixstatic.com/media/49609e_a566bc0cc09e485a89515634da78bc2e.jpg/v1/fill/w_404,h_579,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/49609e_a566bc0cc09e485a89515634da78bc2e.jpg)
Activity 3.8
Assignment 3.9
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Assignment 10.19
Surface Area of Right Cylinders, Cones, and Spheres
Objective
Apply formulas for surface area of right cylinders, cones, and spheres.
About Geometry Worksheet Assignment 10.19:
Assignment 10.19 is an introduction to surface areas of right cylinders, cones, and spheres.
Prerequisite Skills: Calculate the area of a circle (Assignment 10.16). Identify the radius and diameter of a circle (Assignment 10.1).
2
Theorems: The formula for the surface area of a right cylinder is: S = 2 r + 2 r h (h is the height of the cylinder; r is the radius of the base)
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The formula for the surface area of a right cone is: S = r + r l (l is the slant height of the cone; r is the radius of the base)
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The formula for the surface area of a sphere is: S = 4 r (r is the radius of the sphere)