Unit 1: Day 3

Day 3: Surface Area of prisms, pyramids, cylinders, cones, and spheres

 Prism: To find the SA of a prism, combine the area of the 2 bases and the area of the sides. 

Pyramid:To find the SA of a pyramid, take the base area, and add 1/2 x base perimeter x slant height.

Cylinder: To find the SA of a cylinder, take the area of the bases and add 2πrh (radius and height).

Cone: To find the SA of a cone, take the area of the base and add πrL (radius and slant height).

Sphere: To find the SA of a sphere, use the equation 4πr².

Youtube! This video should add some further understanding and enjoyment of the narrator's awesome accent.

 

Quiz Time!

1. What is the surface area of this prism?

 

2.  What is the SA of this sphere?

 

3. What kind of accent did the narrator have? 

Key

1. The SA is 108 in²

2. The SA is 113 cm²

3. The narrator is from India