Calculating Area: Decimal Sides vs. Actual Size Explained

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SUMMARY

The discussion clarifies the calculation of area for a square with decimal side lengths. Specifically, a square with sides measuring 0.5 inches results in an area of 0.25 square inches, calculated as 0.5 x 0.5. The confusion arose from the incorrect assumption that the area could be expressed in inches rather than square inches. The correct interpretation emphasizes that area is always measured in square units, confirming that the area cannot be less than the dimensions of the sides.

PREREQUISITES
  • Understanding of basic geometry concepts, specifically area calculation.
  • Familiarity with square measurements and units of area.
  • Knowledge of decimal arithmetic for precise calculations.
  • Ability to differentiate between linear measurements and square measurements.
NEXT STEPS
  • Research the properties of geometric shapes and their area formulas.
  • Learn about unit conversions in geometry, particularly between linear and square units.
  • Explore common misconceptions in geometry related to area and dimensions.
  • Study practical applications of area calculations in real-world scenarios.
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This discussion is beneficial for students learning geometry, educators teaching mathematical concepts, and anyone seeking to clarify their understanding of area calculations involving decimal measurements.

Drakkith
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This was bothering me a bit. When calculating the area of something, say a square, whose sides are in decimal, will the area be smaller than the sides?

Say we have a square with 0.5 inches for all 4 sides. Will the area be 0.5 x 0.5 = 0.25, or would it be 2.5 inches? 5x5 = 25, divided by 10 = 2.5 inches.
 
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Why are you dividing by 10? You should divide by 100
5/10 * 5/10=0.25
 
I multiplied all the values by 10 to get 5x5=25. Should I be dividing by 100 instead? Seems odd to me that the area is LESS than the 2 side values.Thats pretty much my question, would it be .25 or 2.5 inches for the area?
 
It would be 0.25 square inches...
 
micromass said:
It would be 0.25 square inches...

Alright. I thought it would be, but for some reason, when i was thinking about it, it didn't make sense. (Even though I've known how to do area for like 15 years)

Guess I overthought it lol. Thanks guys.
 

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