Answer with explanation:
Presume that, initial water level to be, 0 mm, at a time t=0.
And water level is rising at the rate of
.
After 6.2 years level of water will be =1.8 × 6.2
=11.16 mm
→Averge, that is increase in water level after 6.2 years is given by

→→Rate of Depreciating of water level is given by = Negative of Increase of water level=
Answer:

Step-by-step explanation:
Given
-- height
--- base sides
Required
Determine the surface area
The net is not given. So, I will solve directly.
The surface area is calculated as:

So, we have:





Answer: im pretty sure its d
Step-by-step explanation:
dhgfldfglijhbfg
9cm cuz if u divide 18 And 2 u will fe y 9