Surface Area Review

Surface Area Review

Geometry | Ms. Castro | March 31st

Surface Area Formulas

• SA = Ph + B (Prism)

• SA = 2πrh + 2πr² (Cylinder)

• SA = ½Pl + B (Pyramid)

• SA = πrl + πr² (Cone)

• SA = 4πr² (Sphere)

What does P represent?

P represents the perimeter of the base. We use it to solve for the surface area of a prism and a pyramid.

Multiple Choice

What is the perimeter of the base of this triangular prism?

• 33 cm

• 30 cm

• 25 cm

• 26 cm

What does B represent?

B represents the area of the base. We use it to solve for the surface area of a prism and a pyramid.

Multiple Choice

What is the area of the base of this triangular prism?

• 60 cm²

• 15 cm²

• 30 cm²

• 48 cm²

What does h represent?

h represents the height of a prism or cylinder. It is the distance from one base to the other.

Multiple Choice

What is the height of this rectangular prism?

• 6 in

• 3 in

• 7 in

• 4 in

What does l represent?

l represents the slant height of a pyramid or cone. It is the height of a lateral face.

Multiple Choice

What is the slant height of this triangular pyramid?

• 8.7 m

• 10 m

• 14 m

• 7 m

What does r represent?

r represents the radius of a cylinder, cone, or sphere. The radius is half of the diameter.

Multiple Choice

What is the radius of this cone?

• 12 yd

• 16 yd

• 8 yd

• 4 yd