Surface area of Cylinders

Surface Area of Cylinders

Objective:

Students will find the surface area of a cylinder.

​Warm up:

What formula can be used to find the area of a rectangle?

What formula is used to find the area of a circle?

Surface Area = the area of all of the surfaces.

What shapes make up the surface of a cylinder?

​https://www.geogebra.org/m/ktw8nhgu

r - radius
h - Heigh of the Cylinder

Multiple Choice

What is surface area?

• Inside of the object

• the sum of all the areas of all the shapes that cover the surface of the object.

• Something Coach G made up?

• Surface area is what you get when you boil unicorn tears. 

Multiple Choice

The radius is ___________ of the diameter?

• one-fourth

• one - half

Multiple Choice

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 19 mm

Math Response

Find the amount of paper needed to make the label for the can of Sweet Peas to the nearest tenth.

Radius 1 in. and a height 2 in.

Type answer here

Correct Answer: 12.5

Deg^°

Rad

Multiple Choice

Find the Total Surface area of the cylinder. 

• 62.8m

• 477.28 cm²

•  235.5 cm³

• 942 cm²

Multiple Choice

What formula would you use to find the total surface area?

• $$S=2\pi\cdot9\cdot11$$

• $$S=2\pi\cdot9^2$$  

• $$S=2\pi\cdot9\cdot11+2\pi\cdot9^2$$  

• $$S=2\pi\cdot18^2$$

Multiple Choice

Find the surface area of the figure. Don't forget to divide the diameter by 2 to find the radius. Round to the nearest tenth.

• 628.3 m²

• 1445.1 m²

• 1245 m²

• 816.8 m²