# Circle and rectangle

The circle describes a rectangle with sides of 11.7 cm and 175 mm. What is its length? Calculate the area of the circle described by this circle.

### Correct answer:

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Do you want to convert length units?

See also our trigonometric triangle calculator.

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

**algebra**- expression of a variable from the formula
**planimetrics**- right triangle
- circle
- area of a shape
- perimeter
- triangle
- diagonal

#### Units of physical quantities:

#### Grade of the word problem:

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