A leak in a water tank causes the water level to decrease by 3.6×10−2 millimeters each second. About how many millimeters does the water level in the tank decrease in 5 hours, or 1.8×104 seconds? Drag and drop the values to the boxes to express the answer in scientific notation.
2
5
5.4
6.5
10^-8
10^-2
10^2
10^6
For this case, the first thing you should do is multiply the rate of decrease by time. We have then: (3.6 × 10-2) * (1.8 × 104) = 648 mm We are going to convert this number into scientific notation: = 6.48 * 10 ^ 2 mm Rounding we have: = 6.5 * 10 ^ 2 mm Answer: The water level in the tank decreases in 6.5 * 10 ^ 2 millimeters in 5 hours
