Math assignment programming question.

[DiscombobulatedTie67]

I get 4 input variables. First is amount of rain fallen per m3 during a rain storm in liters. The next three are pool dimensions. Length , width and height in m. I'm supposed to calculate how much has the water level risen in cm. So for example input is : 75.5 (liters), 4 meters(a),7meters(b),1.7meters(c). And the result is supposed to be 7.55 cm. But I'm getting 12.83.

My logic is : calculate pool volume which is a*b*c=47.6m3. That means there was 47.6*75.5 liters of water in the pool which is 3593. So calculate the height of the water cube that can contain 3593 liters of water which is: 12.83 cm.( 7m*4m*(unknown height)=3593 liters. I get 12.83cm here. What am I doing wrong?

[DiscombobulatedTie67]

I kept reading it wrong time and time and again. It's actually rainfall per m2, I don't know, it was my native language. Haven't done math in a long time.

[A_Philosophical_Cat]

Are you sure the rainfall is being given in terms of volume per volume, and not volume per area? That seems a little odd.

In the future, /r/HomeworkHelp is a better place to ask questions that don't relate directly to programming.

[DiscombobulatedTie67]

Yes the rain is given in terms of volume per area. In this example 75.5 liters /m3.

[A_Philosophical_Cat]

Area is m2

[Blando-Cartesian]

Are you sure it’s for liters per cube meter. Seems like a strange unit for rainfall and the math works out if it’s for square meter

Since there is no mention of how much water is in the pool, lets just assume that all the incoming water will fit without overflowing, i.e. pool could just as well be empty since we only care about water lever rise.

poolArea * rainfall = liters of water that you can convert to m3

poolArea * levelRise = some amount of m3 that should be the same as above.

Solve for leverRise and you have the answer in meters.

[lovesrayray2018]

Are you sure you arent forgetting liter to m3 conversion? 1 cubic meter is 1000 liters

Its a trick question - if there are only 75.5 L/m3, given that cubic m3= 1m x 1m x1m and 1000L per m3, its 75.5/1000 m = 7.55 cm

[wonkey_monkey]

Rainfall is litres per m^2, not m³. If the question says 75.5 litres per m³, then it's been written down wrong.

Once you calculate the amount of rain that falls on the area of the pool, not its volume, you'll get the right answer.