Grade 8 | Unit 5 | Lesson 17: Scaling One Dimension | Practice Problems

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A cylinder has a radius of 3 cm and a height of 5 cm. What is the volume of the cylinder?

• Option A

• Option B

• Option C

What is the volume of the cylinder when its height is tripled?

• Option A

• Option B

• Option C

What is the volume of the cylinder when its height is halved?

• Option A

• Option B

• Option C

A graduated cylinder that is 24 cm tall can hold 1 L of water. What is the radius of the cylinder? What is the height of the 500 ml mark? The 250 ml mark?

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An ice cream shop offers two ice cream cones. The waffle cone holds 12 ounces and is 5 inches tall. The sugar cone also holds 12 ounces and is 8 inches tall. Which cone has a larger radius?

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A 6 oz paper cup is shaped like a cone with a diameter of 4 inches. How many ounces of water will a plastic cylindrical cup with a diameter of 4 inches hold if it is the same height as the paper cup?

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Lin’s smart phone was fully charged when she started school at 8:00 a.m. At 9:20 a.m., it was 90% charged, and at noon, it was 72% charged. When do you think her battery will die?

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Is battery life a function of time? If yes, is it a linear function? Explain your reasoning.

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