7-6 & 7-7 Practice: Surface Area of Prisms & Pyramids

What formula can Krista use to determine the area of each rectangle in a rectangular prism?

• A = hw

• A = bh

• A = πr²

• A = 2πrh

Krista finds the surface area of a rectangular prism. Can she use the formula A = bh to determine the area of each rectangle?

• Yes, she can use the formula A = bh.

• No, she cannot use the formula A = bh.

• Yes, but only for one rectangle.

• No, she needs a different formula.

What is the surface area of the rectangular prism Krista is working with?

• 84 ft²

• 72 ft²

• 90 ft²

• 60 ft²

Wade finds the surface area of a rectangular pyramid. What is the area of the rectangular base?

• 15 m²

• 12 m²

• 20 m²

• 10 m²

How could Wade find the area of ALL the triangles on the rectangular pyramid?

• By using 1/2 (5)(4) twice and 1/2 (3)(4.5) twice and then adding them together.

• By using 1/2 (3)(4) and then multiplied by 4.

• By using 1/2 (5)(3) and then multiplied by 4.

• By using 1/2 (5)(4) twice and 1/2 (3)(4.5) twice and then subtracting their areas.

Jacqueline finds the surface area of a triangular prism. What is the area of ONE of the bases?

• 6 in²

• 12 in²

• 40 in²

• 20 in²

What is the surface area of the triangular prism Jacqueline is working with?

• 116 in²

• 100 in²

• 120 in²

• 110 in²

Leonardo finds the surface area of a cube. How can he find the surface area?

• Find the area of one square and multiply it by 6.

• Find the area of one square and multiply it by 4.

• Find the area of one square and multiply it by 8.

• Find the area of one square and multiply it by 2.

What is the surface area of the cube Leonardo is working with?

• 486 cm²

• 324 cm²

• 243 cm²

• 729 cm²

Surface area is for only 3D shapes.

• True
• False