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Two side by side circles with the radius of the circle on the right 3 times the size of the radius of the circle on the left.

Tomaz draws a circle and dilates it on a photocopier using a scale factor of 3. If the original circle has a radius of 3 cm, what is the area of the dilated circle? Round your answer to the nearest tenth of a square centimeter.

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Answered by GPT-5 mini AI
Scale factor 3 → new radius = 3·3 = 9 cm. Area = πr^2 = π(9^2) = 81π ≈ 254.5 cm^2.