Surface Area Rectangular Prism Change Scale

You need to paint your rectangular prism bedroom. Your room is 10 feet by 12 feet and has 8 foot tall ceilings. A gallon of the paint you want covers 250 square feet. If you painted the floor, the walls, and the ceiling of your room, how many gallons would you need?

• 2 gallons

• 3 gallons

• 4 gallons

• 5 gallons

It takes 2 ounces of paint to completely cover all 6 sides of a rectangular prism box which holds 15 cups of sugar. Double the dimensions of the box. Approximately how much paint would the new box need?

• 8

• 16

• 4

• 3

When multiplying a length by a scale factor, does the scale factor change? ​ When adjusting the surface area of a solid, the scale factor must be ​ . When adjusting the volume of a solid, the scale factor must be​ .

• No

• squared

• cubed

• Yes

• Not relevant

• left alone

If the height of the rectangular prisms changes from 5in to 10 in what would the difference in surface area be between the two rectangular prisms?

• 80 in.²

• 90 in.²

• 96 in. ²

• 105 in.²

What is the surface area of this figure?

• 200 cm ²

• 800 cm ²

• 400 cm ²

• 100 cm ²

To calculate the amount of cardboard needed to make a cereal box, which of the following should you find: 

• Area

• Perimenter

• Surface Area

• Volume

Find the Surface Area.

• 15.6m²

• 96m²

• 52.3m²

• 890m²

Find the total surface area:

• 556 cm²

• 278 cm²

• 680 cm²

• 340 cm²