# Three shapes

1/5 of a circle is shaded. The area's ratio of a square and the sum of a| rectangle and the circle is 1:2. 60% of the square is shaded, and 1/3 of the rectangle is shaded. What is the ratio of the area of the circle to that of the rectangle?

## Correct answer:

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

**algebra**- equation
- system of equations
**planimetrics**- circle
- area of a shape
- square
- rectangle
**basic functions**- ratio
- percentages
**numbers**- fractions

### Units of physical quantities:

### Grade of the word problem:

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