# The solar

The solar heating tank has the shape of a rotating cylinder. When the tank is in a horizontal position, the water in the tank wets 4/5 of each tank base. If we place the tank in a vertical position, the water in the tank will reach up to 1.2 m. Calculate the length of the tank.

### Correct answer:

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#### You need to know the following knowledge to solve this word math problem:

**algebra**- expression of a variable from the formula
**arithmetic**- multiplication
**solid geometry**- cylinder
**numbers**- fractions

#### Units of physical quantities:

#### Grade of the word problem:

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