12.1 Cross Sections of Solids and 12.8 Solids of Revolutions CW

Describe the cross-section. (a)   #1

• rectangle
• square
• parallelogram
• circle

Describe the cross-section. #2

• triangle

• rectangle

• oval

• trapezoid

Describe the cross-section. #3

• trapezoid

• triangle

• rectangle

• square

What is the area of the cross-section if the diameter of the base is 6 feet and the height of the cylinder is 8 feet? #4

• 24 ft²

• 48 ft²

• 8 ft²

• 4 ft²

Select the 2D object that can be rotated to form the 3D object shown. #5

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What shape does this cross-section make? #6

• Rectangle

• Circle

• Triangle

• Square

A semi-circle with points A and B is shown. When the semi-circle is rotated about the side AB, which of the following three-dimensional figures is created? (a)   #8

• sphere
• cone
• cylinder
• cube

A rectangle and a horizontal line segment are shown. What is the resulting object when the rectangle is rotated around the horizontal line segment? #9

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What is the cross-section depicted here? (a)   #10

• Square
• Triangle
• Pyramid
• plane