Math 7 Surface Area Unit

Coach Hanf 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 the box?

• 34 ft²

• 42 ft²

• 30 ft²

• 18 ft²

Classify the 3D solid from its net.

• triangular prism

• triangular pyramid

• ninja star

• triangular net

How many square centimeters of wrapping paper are needed to cover the surfaces of the box? 

• 108 cm²

• 324 cm²

• 180 cm²

• 432 cm²

A pyramid has a square base. Each side of the base is 9 cm. The slant height of each triangle is 14 cm. What is the surface area?

• 126 cm²

• 144 cm²

• 252 cm²

• 333 cm²

A rectangular brick has a length of 5 centimeters, a width of 9 centimeters and a surface area of 650 cm². What is the height of the brick?

• 20 cm

• 43 cm

• 14 cm

• 10 cm

Find the Surface Area

• 556 cm²

• 278 cm²

• 680 cm²

• 340 cm²

Find the surface area of this figure.

• 148 cm²

• 120 cm²

Find the surface area of the rectangular prism.

• 94 cm. squared

• 60 cm. squared

• 12 cm. squared

• 19 cm. squared

Find the total surface area of the prism.

• 48 square inches

• 64 square inches

• 88 square inches

• 76 square inches

Find the surface area of the rectangular prism.

• 140 in.²

• 83 in.²

• 166 in. ²

• 100 in.²