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Mathematics for IGCSE & O level - Mensuration (Section 12 - No. 27)

What is the area of a circle with a radius of 5cm?
15.7 cm²
78.5 cm²
31.4 cm²
25 cm²

Paaiškinimas

Area = πr² = π * 5² = π * 25 = 78.5 cm²

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