Practice for Unit 8 Test

Which set of numbers cannot represent the lengths of the sides of a triangle?

• 7, 9, 12

• 7, 18, 10

• 6, 4, 5

• 10, 10, 15

Alejandro created a diagonal cross section cut on a sphere. What plane figure did he discover after making the cut?

• Triangle

• Diamond

• Rectangle

• Circle

Choose the correct formula for determining the circumference of a circle:

• C =2 π r

• C =2 π

• C =2 d

• C =2 π d

Choose the correct formula for calculating the volume of a rectangular prism:

• Volume = width + length + height

• Volume = base x height

• Volume = base x height x width

• Volume = width x length x height

Choose the answer that correctly shows how to calculate the surface area of a rectangle, and then the surface area of a triangle.

• Rectangle A = lw Triangle A = 1/2bh

• Rectangle A = lwh Triangle = 2bh

• Rectangle = lw Triangle = lwbh

• Rectangle = lhb Triangle = 1/2bh

Solve for (2x + 10), if x is equal to 11

• 30

• 32

• 12

• 23

Calculate the volume of a cube with the following dimensions: length = 40mm, width = 10mm, height = 20mm

• 70 mm

• 8,000 mm

• 8,000 cubic mm

• 800 cubic mm