# Semicircle

The ornament consists of one square and four dark semicircles. The area of the square is 4 cm

^{2}. Find the area of one dark semicircle and round the result to hundreds.## 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**- square root
- rounding
**planimetrics**- circle
- area of a shape
- square
- circular sector
- circular segment

### Units of physical quantities:

### Grade of the word problem:

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