12 things that has energy
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Let be the amount of water that evaporates. At the start, the solution in the tub consists of 2.5 gallons of salt (5% of 50 gallons). After
gallons of water evaporates, we're left with a solution with total volume
gallons, and 8% of this amount should be salt, or
gallons of salt. The amount of salt in the tank before and after evaporation remains unchanged, so
gallons of water need to be evaporated.
The solid in the picture is a cylinder; thus, we can use the following formula:
This formula works even if the solid is slanted.
The radius is 6 cm and the height is 5 cm.
Plug in these values into the volume formula.
The volume is 180π cm³. I hope this helps! :)
This formula works even if the solid is slanted.
The radius is 6 cm and the height is 5 cm.
Plug in these values into the volume formula.
The volume is 180π cm³. I hope this helps! :)