1a.   The side lengths of a rectangle are 4 and 8. Find its area.
1b.   Find the area of a square with side length 7.
2a.   The sides of a rectangle are 2 and 9. Find its area.
2b.   Find the area of a rectangle with side lengths 5 and 4.
3a.   The side length of a square is 10. Find its area.
3b.   The area of a square is 81 square units, and its side is 9. Find its perimeter.

Answer Key

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