TEKS.MATH.8.7B

Juanita covered the outside of a gift box shaped like a rectangular prism with paper.  The box is 3.2 feet long, 2.1 feet wide, and 2.7 feet high.  Which of the following is closest to the total surface area of this box?

• 34 ft²
• 42 ft²
• 30 ft²
• 18 ft²

Tags

TEKS.MATH.8.7B

Find the total surface area of the cylinder.

• 471.24 square centimeters
• 157.08 square centimeters
• 314.16 square centimeters
• 296.72 square centimeters

Tags

TEKS.MATH.8.7B

If the length, width and height of the rectangular prism pictured all double, what happens to the surface area of the prism?

• Nothing -- the surface area stays the same

• The surface area doubles

• The surface area quadruples

Tags

TEKS.MATH.8.7B

When using the lateral surface area formula S = Ph, what does the "P" represent?

• Perimeter of the base

• Percent

• Principal

Tags

TEKS.MATH.8.7B

What is the surface area?

• 6658.56 mm²

• 452.16 mm²

• 904.32 mm²

• 108.8 mm²

Tags

TEKS.MATH.8.7B

Find the surface area of the figure.
Round your answer to the nearest hundredth.
Use the formula:  $SA=4\pi r^2$  

• 1,520.53 $cm^2$

• 760.27 $cm^2$

• 379.94 $cm^2$

• 759.88 $cm^2$

Tags

TEKS.MATH.8.7B

Joe is buying carpet for a 15-foot-by-10-foot room. If carpeting costs $1.50 per square foot, how much will it cost?

• $37.50

• $22.50

• $2.25

• $225

Answer explanation

$15\cdot10=150$

The room is 150 square feet. The price is more than a dollar per square foot. Therefore, it must be more than $150.

Tags

TEKS.MATH.8.7B

A cylinder and its dimensions are shown in the diagram.

Which measurement is closest to the lateral surface area of the cylinder in square centimeters?

• 575.3 cm²

• 287.6 cm²

• 398.5 cm²

• 604.1 cm²

Tags

TEKS.MATH.8.7B

Find the total surface area of the prism.

• 161 square feet
• 1,700 square feet
• 75 square feet
• 186 square feet

Tags

TEKS.MATH.8.7B

Find the lateral surface area.

Don't forget to divide the diameter by 2 to get the radius.

• 100.53 square inches

• 351.86 square inches

• 251.33 square inches

• 50.27 square inches

Tags

TEKS.MATH.8.7B