Final answer:
The total change in rainwater level after 8 weeks is 9.6 cm, which is calculated by multiplying the evaporation rate of 1.2 cm per week by the duration of 8 weeks.
Step-by-step explanation:
To find the change in rainwater level after 8 weeks with an evaporation rate of 1.2 cm per week, we can use a simple multiplication. Here are the steps for calculation:
- Identify the rate of evaporation: 1.2 cm per week.
- Identify the time period: 8 weeks.
- Multiply the evaporation rate by the time period to find the total change in water level: 1.2 cm/week x 8 weeks.
By performing the multiplication, we get a total change of 9.6 cm.
Therefore, the rainwater level in the container will decrease by 9.6 cm after 8 weeks due to evaporation.