Foundation Mathematics Primary 6 Circles

A circle has a diameter of 21 cm. Find its circumference. (Take π = 22/7.)

A 33 cm
B 132 cm
C 66 cm
D 99 cm
Show Worked Solution

Worked Solution

Step 1: Circumference = π × diameter. Step 2: C = (22/7) × 21 = 22 × 3 = 66 cm. Answer: 66 cm

Correct answer: 66 cm

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