Find the area of each. Round your answer to the nearest tenth. radius = 12 km radius = 3 m radius = 8 cm diameter = 12 ft diameter = 23.2 yd radius = 11 m radius = 10 yd diameter = 11.2 in diameter = 12.8 yd diameter = 14 km

To find the area of a circle, you can use the formula:

[ text{Area} = pi r^2 ]

where ( r ) is the radius. If you’re given a diameter, you can find the radius by dividing the diameter by 2.

Let’s calculate the area for each case:

1. Radius = 12 km

[ text{Area} = pi (12)^2 approx 452.4 text{ km}^2 ]

2. Radius = 3 m

[ text{Area} = pi (3)^2 approx 28.3 text{ m}^2 ]

3. Radius = 8 cm

[ text{Area} = pi (8)^2 approx 201.1 text{ cm}^2 ]

4. Diameter = 12 ft

Radius = 12 ft / 2 = 6 ft

[ text{Area} = pi (6)^2 approx 113.1 text{ ft}^2 ]

5. Diameter = 23.2 yd

Radius = 23.2 yd / 2 = 11.6 yd

[ text{Area} = pi (11.6)^2 approx 423.5 text{ yd}^2 ]

6. **