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Rhenane
11 months ago

b) At a) you calculated the height at 1,000 l (=1 m3) of water. This height will take you from 1.20 m and calculate with this new height the volume that needs to be filled into the pool. If you calculate at the height h and the radius r in the unit m, then your calculated volume is in m3: as asked by liter, you must then multiply the volume by 1,000.

c) the 1,000 liters from a) plus the additional liters from b) yield the kilograms of water in the pool. Compared with the car weight (1,500 kg)…

Rhenane
11 months ago
Reply to  Viorelia

You only need the volume formula of the cylinder (with which you also have to count a). V=pi * r2 * h

At a) you have to change this after h: h=V/(pi*r2) [with V=1 m3 and r=1.5 m]

Rhenane
11 months ago

Gerne – the units is a frequent source of error! It is necessary to take particular care or always well consider which units are best converted.

Rhenane
11 months ago

No! That would be a quite high pool with h=716,20 – whether in m or dm or cm…

You have to pay attention to equal units! 1000 l=1.000 dm3=1 m3. Since you have given the diameter in meters, and at b the height in m is desired, I would convert everything into m. Therefore, in my comment, I also wrote V=1 m3. And you need to share not only by pi, but also by r2 (stands both in the denominator), i.e.: h=1/(3,14*1,52)=0.14 m.