Pre Algebra
Unit 2 Lesson 11 Ice Design Portfolio: Use the formulas below to find the surface area and volume of the cube, sphere, and cylinder “ice cubes”.

Question:

Use the formulas below to find the surface area and volume of the cube, sphere, and cylinder “ice cubes”.

“Ice cube” measurements:

•Cube:  s = 3 cm  

•Sphere:  r = 1 cm

•Cylinder:  r = 2 cm and h= 3 cm

Note: After you find the surface area and volume of each shape, divide the surface area by the volume to find the surface area to volume ratio expressed as a single number.  This should go in the last column.

Cube:

Surface area =  

Surface area  =  6 (3)(3)

Surface area =  

Volume =  

Volume  =

Volume  =

Surface Area to Volume Ratio = = = 2:1

Sphere:

Surface area =  

Surface area  =  

Surface area =  

Surface area =   (rounding off )

Volume =  

Volume  =

Volume  =

Volume  = (rounding off )

Surface Area to Volume Ratio = = 13  : 1

Cylinder:

Surface Area

Surface Area  =  

Surface Area  =  

Surface Area  =  

Surface Area =  

Surface Area  =  

Surface area = 63 (rounding off )

Volume  =  

Volume   =

Volume  =  

Volume  =

Volume  =  37 .699

Volume  =  38

Surface Area to Volume Ratio =  =  68 : 38

answer:

c

explanation:

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