6th Grade Math Textbook, Progress

Find the surface area of each figure.

1. 
   
   
   
   2. 
      
      
      
      3. 
         
      
      
      
      
   
   
   
   


2. 
   
   
   
   5. 
      
      
      
      6. 
         
      
      
      
      
   
   
   
   


3. Randolph makes a doorstop in the
   shape of a pyramid. The base of the
   pyramid is a square with 4-in. sides
   and triangular faces 4 in. tall. Randolph
   wants to cover the pyramid with felt.
   What is the surface area that he
   needs to cover?


4. Sheila makes a pyramid with a 5.5-in.
   square base. Each triangular face
   has a height of 7.8 in. Angie makes a
   pyramid with a 6.5-in. square base.
   Each triangular face has a height
   of 6.8 in. Whose pyramid has the
   greater surface area? by how many
   square inches?
   8. The name tags on the library tables
   are shaped like triangular prisms. The
   triangular faces of the prisms have
   5-cm bases, 6-cm sides, and heights
   of 5.45 cm. The rectangular faces of
   the prisms are 12 cm long. What is
   the surface area of each name tag?


5. David makes a triangular prism.
   The triangular faces of the prism
   have 5-ft bases. The sides of the
   triangles are 10.31 ft long, and
   their heights are twice the length of
   the bases. The lengths of the
   rectangular faces are twice the height
   of the triangular faces. What is the
   surface area of David’s prism?

Draw a diagram and solve.

11. Explain how to find the surface area of a triangular prism
    that has equilateral triangles as its bases.

7 m

7 m

9 m

11 cm

11 cm

9 cm

1.2 yd

1.2 yd

3.3 yd

4 in. 3 in.

2.5 in. 2.5 in.

2 in.

12 ft

4 ft

5 ft 5 ft

6 ft

7 m^12 7 m

1

2

13 m

9 m

6 m

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