7th Grade Topic 8 Review

7th Grade Topic 8 Review

Cross Sections

• Slicing the figure parallel to the base --> cross section is shape of the base

• Slicing the figure perpendicular to the base --> cross section is shape of the lateral faces

Multiple Choice

What shape represents the cross-section sliced by a plane perpendicular to the base

• rectangle

• triangle

• trapezoid

• rhombus

Multiple Choice

What shape represents the cross-section sliced by a plane parallel to the base

• Oval

• triangle

• Circle

• rectangle

Multiple Choice

Every cross-section of the figure is represented by what shape?

• Oval

• Ellipse

• square

• circle

Circumference of a circle

• Diameter is the distance all the way across a circle, radius is half the distance starting at the center (d = 2r)

•  $C\ =2\pi r$  or
  

•  $C=\pi d$  

Multiple Choice

The clock face of Big Ben has a diameter of 8.9 feet. what is the circumference?

• 27.95 feet

• 13.97 feet

• 8.9 feet

• 27.8 feet

Multiple Choice

Rory has a frisbee with a circumference of 14.21 inches. What is the radius?

• 4.53 in

• 7.12 in

• 44.62 in

• 2.26 in

Multiple Choice

Luke made a pizza with a radius of 10.2 cm. What is the area of the pizza?

• 326.7 cm^2

• 32.03 cm^2

• 64.06 cm^2

• 216.23 cm^2

Multiple Choice

If each side of the square is 6 inches, what is the area of the circle?

• 18.84 cm^2

• 28.26 in^2

• 9.42 cm^2

• 13.44 cm^2

Volume of Prisms and Pyramids

Multiple Choice

What is the volume of the figure?

• 288 cm^3

• 96 cm^3

• 48 cm^3

• 144 cm^3

Composite Area/Volume

• Find the area or volume of each figure separately, then add them together

• 
  

Multiple Choice

What is the area of the figure?

• 73.12 in^2

• 98.24 in^2

• 48 in^2

• 50.24 in^2

Multiple Choice

Each layer of a 16-layer cake has dimensions l=10, w= 8, h=1. What is the volume of the ENTIRE cake?

• 80 in^3

• 1280 in^3

• 1600 in^3

• 800 in^3

Multiple Choice

Find the surface area of the cereal box

• 4800 cm^2

• 100 cm^2

• 2000 cm^2

• 4000 cm^2

Composite Surface Area

• Find the surface area of each figure separately and add them together

• THEN SUBTRACT the face(s) that are NOT part of the surface.

Multiple Choice

Find the surface area of the combined figure

• 976 in^2

• 168 in^2

• 1728 in^2

• 512 in^2