Question

topic: multiplying whole numbers and applications
progress
the movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answer
round each measurement to the nearest ten. then estimate the area of the rectangle.
42 inches
86 inches
128 inches
3612 square inches
3,600 square inches
256 inches

Explanation:

Step1: Round 42 to nearest ten

42 rounds to 40 since 2 < 5.

Step2: Round 86 to nearest ten

86 rounds to 90 since 6 > 5.

Step3: Calculate estimated area

The area of a rectangle is $A = l\times w$. Here, $l = 90$ and $w = 40$, so $A=90\times40 = 3600$ square - inches.

Answer:

3, 600 square inches