# Calculate 74024

The diagonal of the axial section of the rotating cylinder is 6 cm, and its surface is 30 cm square. Calculate the radius of the base.

## Correct answer:

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

**algebra**- equation
- expression of a variable from the formula
**arithmetic**- square root
**solid geometry**- cylinder
- surface area
**planimetrics**- Pythagorean theorem
- right triangle
- circle
- area of a shape
- diagonal
- rectangle
**numbers**- fractions

### Units of physical quantities:

### Grade of the word problem:

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