TEKS.MATH.8.7B

Find the lateral area and surface area of each figure. Round your answers to the nearest tenth, if necessary.

• 203.4 m²; 297 m²
• 37.7 m²; 50.3 m²
• 50 m²; 75 m²
• 150 m²; 254.5 m²

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TEKS.MATH.8.7B

Find the Surface Area

• 490.9in²

• 295.6in²

• 221.7in²

• 753.7in²

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TEKS.MATH.8.7B

If the width of the rectangular prism (15 in) doubles what would the difference in surface area be from the original (in the picture) to the new rectangular prism?

• 400 cm ²

• 600 cm ²

• 800 cm ²

• 1000 cm ²

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TEKS.MATH.8.7B

Lateral surface area of cube , whose side measures 5 cm, is

• $150\ cm^2$

• $125\ cm^2$

• $25\ cm^2$

• $100\ cm^2$

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TEKS.MATH.8.7B

Ravi painted the outside of a box on all sides except the bottom. If the box measures 2m x 1m x 1.5m, how much surface did he paint?

• 13 sq m

• 26 sq m

• 11 sq m

• 9 sq m

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TEKS.MATH.8.7B

A cylinder of curved surface area 1152 sq m is formed from a rectangular metallic sheet. Find the dimensions of the rectangular sheet if its length is double of its breadth.

• b = 11 m, l = 22 m

• b = 24 m, l = 48 m

• b = 10 m, l = 20 m

• b = 8 m, l = 16 m

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TEKS.MATH.8.7B

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

• Area
• Perimenter
• Surface Area
• Volume

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TEKS.MATH.8.7B

Which example requires you to find the surface area?

• Finding out how much water will fill a cylinder
• Finding out how much wrapping paper is needed to cover a present
• Finding the amount a container can hold
• Finding out how much wood is needed to build a fence in your back yard.

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TEKS.MATH.8.7B

A container is shaped like a triangular prism. Each base of the container is an equilateral triangle with the dimensions shown.

The container has a height of 15 centimeters. What is the lateral surface area of the container in square centimeters?

(Do not type in the units)

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TEKS.MATH.8.7B

What is the formula for total surface area of a cylinder?

•  $V\ =\ \pi r^2h$ 

•  $S\ =\ 2\pi rh$ 

•  $S\ =\ 2\pi rh\ +\ 2\pi r^2$ 

• $V\ =\ \frac{4}{3}\pi r^3$

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TEKS.MATH.8.7B