The actual dimensions of a rectangle are 6 in by 10 in. Eric measures the sides to be 5.85 in by 10 in. In calculating the area, what is the relative error, to the nearest thousandth.Answer:
Q. The actual dimensions of a rectangle are 6 in by 10 in. Eric measures the sides to be 5.85 in by 10 in. In calculating the area, what is the relative error, to the nearest thousandth.Answer:
Calculate Actual Area: To find the relative error, we first need to calculate the actual area and the measured area of the rectangle.The actual area Aactual is found by multiplying the actual length and width.Aactual=Actual length×Actual widthAactual=6in×10inAactual=60in2
Calculate Measured Area: Now, we calculate the measured area (Ameasured) using the measured dimensions.Ameasured=Measured length×Measured widthAmeasured=5.85in×10inAmeasured=58.5in2
Calculate Relative Error: The relative error Erelative is the absolute value of the difference between the actual area and the measured area, divided by the actual area.Erelative=Aactual∣Aactual−Ameasured∣Erelative=60 in2∣60 in2−58.5 in2∣Erelative=60 in2∣1.5 in2∣Erelative=60 in21.5 in2Erelative=0.025
Express Relative Error: To express the relative error to the nearest thousandth, we keep three decimal places. Erelative≈0.025 (to the nearest thousandth)