G.DF.1 Checkpoint Quizzes + Decathlon

Which statement is true regarding any sphere?

• A. Its cross section is in the shape of a circle

• B. Its cross section is in the shape of a cone

• C. Its cross section is in the shape of a cylinder

• D. Its cross section is in the shape of an ellipse

Which figure best represents the cross section of a rectangular prism?

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The regular pyramid pictured has a base area of 16 cm². What is the surface area of the pyramid?

• A. 32 cm²

• B. 64 cm²

• C. 80 cm²

• D. 96 cm²

How much plastic will be needed to cover a beach ball with a radius of 20 in.?

• A. 2,51.2 in.²

• B. 1,004.8 in.²

• C. 1,257 in.²

• D. 5,027 in.²

A cylinder-shaped barrel has a diameter of 3 ft. and a height of 4.5 ft. Which is the closest to the surface area of the barrel?

• A. 31.8 ft.³

• B. 56.6 ft.³

• C. 127.2 ft.³

• D. 141.1 ft.³

Identify the cylinders with the same volume.

• Cylinder A

• Cylinder B

• Cylinder C

• Cylinder D

• Cylinder E

A rectangular prism has a volume of 150 cm³. If the height measures 3 cm and the width measures 2 cm, what must the length be to achieve the given volume?

• A. 13.8 cm

• B. 25 cm

• C. 144 cm

• D. 145 cm

If a cylinder has a volume of 27 m³, what would be the volume of a cone with the same dimensions (radius & height)?

• A. 3 m³

• B. 9 m³

• C. 27 m³

• D. 81 m³

Gina made a gelatin dessert in a cylindrical mold. She took it out of the mold and placed it onto a plate. Gina sliced the dessert down the middle, as shown. What two-dimensional shape did Gina expose?

• A. Circle

• B. Oval

• C. Rectangle

• D. Trapezoid