NaiNai27
Answered

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Ross needs to buy a countertop for a laundry room. He calculated the area to be 12 square feet. The actual area is 11.8 square feet. What is Ross's percentage error?

Sagot :

TSO
The formula for percentage error is:

[tex]\sf{Percentage~ error= \frac{|Approximate ~-~ Actual|}{|Actual|}} [/tex]

Ross got the approximate area as 12, while the actual area was 11.8. So, let's plug it in to the formula.

[tex]\sf{Percentage~ error= \frac{|Approximate ~-~ Actual|}{|Actual|}= \frac{|12-11.8|}{|11.8|}= \frac{|0.2|}{|11.8|}= \frac{0.2}{11.8} \approx 0.0169 }[/tex]

Multiply 0.0169 by 100 to make it into a percent.

0.0169 * 100 = 1.69%

Ross's percentage error is 1.69%.
yertleturtle4

Answer: B - 1.69%

I took the test, trust me.

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