The formula for percentage error is:
![\sf{Percentage~ error= \frac{|Approximate ~-~ Actual|}{|Actual|}}](https://tex.z-dn.net/?f=%5Csf%7BPercentage~%20error%3D%20%5Cfrac%7B%7CApproximate%20~-~%20Actual%7C%7D%7B%7CActual%7C%7D%7D%20)
Ross got the approximate area as 12, while the actual area was 11.8. So, let's plug it in to the formula.
![\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 }](https://tex.z-dn.net/?f=%5Csf%7BPercentage~%20error%3D%20%5Cfrac%7B%7CApproximate%20~-~%20Actual%7C%7D%7B%7CActual%7C%7D%3D%20%5Cfrac%7B%7C12-11.8%7C%7D%7B%7C11.8%7C%7D%3D%20%5Cfrac%7B%7C0.2%7C%7D%7B%7C11.8%7C%7D%3D%20%5Cfrac%7B0.2%7D%7B11.8%7D%20%5Capprox%200.0169%20%7D)
Multiply 0.0169 by 100 to make it into a percent.
0.0169 * 100 =
1.69%Ross's percentage error is
1.69%.
Answer:
about 56.55 (rounded)
Step-by-step explanation:
diameter = 2r
circumfrence = dimeter(pi)
18(pi)
= about 56.55 (rounded)
Answer:
60 more students
Step-by-step explanation:
400 × 0.3 (30%) = 120
400 × 0.15 (15%) = 60 = 120÷2
120 -- 60 = 60
60 more students
brainliest plz if someone else answers
Answer:
y=mx+b
Step-by-step explanation:
graph isn't their