The diameter of a circle is 10 meters What is the area of the circle? (Use 3 point 1 4 for pi and round to the nearest tenth.)

The radius is half the diameter, so the radius is 10 ÷ 2 = 5 meters. Use the circle area formula, A = πr²: 3.14 × 5² = 3.14 × 25 = 78.5 square meters. The correct choice is 78.5 m².

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