1 Answer

1. 

   Quizzma Team

   2026-01-11T17:52:52-04:00Added an answer on January 11, 2026 at 5:52 pm

   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. **

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