Mathematics for IGCSE & O level - The Four Operations (Section 7 - No. 36)
If a circle has a radius of 3, what is its circumference (approximately)? (Use π ≈ 3.14)
6.28
9.42
18.84
28.26
Explanation
Circumference = 2 * π * r = 2*3.14*3 = 18.84
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