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| Surface Area and Materials Calculation |
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| Calculation of Surface Area and Volume |
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Length in feet |
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Width in feet |
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Height in feet |
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Surface Area in sq. ft. |
Volume in Cubic Feet l x w x h |
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| Room size |
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12 |
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10 |
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8 |
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960 |
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| Floor |
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12 |
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10 |
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120 |
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| 2 walls (long) |
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12 |
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8 |
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192 |
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| 2 walls (short) |
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10 |
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8 |
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160 |
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| Ceiling |
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12 |
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10 |
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120 |
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| Total surface area = |
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592 |
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| How to use this information? |
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| What size A/C unit do you need to cool your room? |
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| Example: |
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| Heater/ac unit |
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Room sq.ft. |
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BTU/ton |
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BTU required |
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120 |
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12000 |
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2400 |
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| A/C window unit (URL below) will cool 6000btu |
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$ 169.00 |
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| http://www.lowes.com/lkn?action=productDetail&productId=149299-000000046-ACM062PK |
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| Note: |
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| 1 ton of cooling capacity = 12000 BTU of cooling capacity |
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| 600 sq.ft. of living space (w/8' ceiling) requires 1 ton of cooling capacity |
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| How much carpet do you need to buy to cover the floor? |
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| Example: |
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Floor Area in sq.ft. |
Carpet width in ft. |
Price per linear foot |
Number of linear feet required |
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120 |
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12 |
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$ 15.84 |
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10 |
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$ 158.40 |
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| http://www.ifloor.com/cats/Carpet/Cashmere_(12)-5583/item-MOHAWK-441-527-12.html |
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| Note: |
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| Calculate linear feet needed to cover the floor of your room?. |
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| Price is given in sq.ft. and linear ft. |
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| How many gallons of paint are needed to paint your walls? |
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| Example: |
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Coverage per gallon |
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Area in sq.ft. |
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Gallons required |
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Paint price per gal. |
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472 |
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400 |
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1.18 |
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$ 9.97 |
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$ 19.94 |
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| http://www.lowes.com/lkn?action=productList&function=search&categoryId=WALL_AND_TRIM.CATEGORY |
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| Note: |
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| Assume that 1 gallon covers ~ 400 sq. ft. |
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| (120sq. ft. +160 sq. ft.+ 192 sq.ft.) = 472 |
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Copyright © Mrs. Ossorio May 2002 |
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