Question

A leak in a water tank causes the water level to decrease by 3.6×10−23.6×10−2 millimeters each second. About how many millimeters does the water level in the tank decrease in 5 hours, or 1.8×1041.8×104 seconds? Drag and drop the values to the boxes to express the answer in scientific notation.

Answer 1

Answer: $6.48 \times 10^2$

Step-by-step explanation:

Since, According to the question,

The leak in a water tank causes the water level to decrease by  $3.6\times 10^{-2}$ millimeter

That is , in 1 second it decreases $3.6\times 10^{-2}$ mm

⇒ In $1.8\times 10^4$ seconds it will decrease  $3.6\times 10^{-2}\times 1.8\times 10^4$ mm

⇒ In $1.8\times 10^4$ seconds it will decrease  $6.48\times 10^{2}$ mm