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Use the radii or the diameter to calculate the area for each of the circles below. Use 3.14 as the value of Pi. |
|||

area = 28.26 cm |
area = 78.5 cm |
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area = 153.86 cm |
area = 12.56 cm |
||

area = 19.625 cm |
area = 113.04 cm |
||

area = 153.86 cm |
area = 28.26 cm |

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## Related Resources

The various resources listed below are aligned to the same standard, (7G04) taken from the CCSM (Common Core Standards For Mathematics) as the Geometry Worksheet shown above.

*Know the formulas for the area and circumference of a circle and use them to solve problems; give an informal derivation of the relationship between the circumference and area of a circle. *

### Worksheet

#### Area

- Calculating Compound Areas (with circles, semi-circles, etc.)

#### Shapes and Figures

#### Similarity, Congruence and Transformations

- Circles e.g. Identifying radii, diameter and center

Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:

*Solve real-life and mathematical problems involving angle measure, area, surface area, and volume*

- Angle Relationships (From Example/Guidance)
- Calculating Volumes e.g. of triangular prisms and cylinders (From Worksheet)
- Angle Relationships (From Worksheet)
- Angles: Supplementary, Corresponding & Alternate (1 of 2) (From Worksheet)
- Angles: Supplementary, Corresponding & Alternate (2 of 2) (From Worksheet)
- Angles: Supplementary (From Worksheet)