Area True or False

1. What is the area of a circle with diameter 10 mm? -> 14π mm2
2. What is the area of a two-dimensional circular pie with radius 4 inches? -> 8π in2
3. What is the circumference of a circle with an area of 81π km2? -> 18π km
4. A circle has an area that is equal to twice its circumference. What is the radius of the circle? -> 4 units
5. A semicircle's area is 32π in2. What is the diameter? -> 16 in
6. What is the area of a sector with a central angle of 90° and a radius of 4 in? -> 2π in2
7. What is the measure of a sector (in degrees) that has a radius of 5 and an area of 10π? -> 72°
8. What is the radius of a sector that has a measure of 80° and an area of 18π m2? -> 9 m
9. A regular hexagon has a side length of 2 ft. What is the area of the hexagon? -> 12 ft2
10. A circle has a center at (-1, -1) and a point at (0, 4). What is its area? -> 26π units2

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