Foundation Mathematics Primary 6 Circles

Mei Ling has a round paper fan with a radius of 7 cm. Find the area of the fan. (Take π = 22/7.)

A 154 cm²
B 44 cm²
C 49 cm²
D 22 cm²
Show Worked Solution

Worked Solution

Step 1: Identify the formula for the area of a circle: Area = π × r × r. Step 2: Substitute r = 7 cm and π = 22/7. Area = 22/7 × 7 × 7 Step 3: Simplify. 22/7 × 7 = 22, so Area = 22 × 7 = 154 cm². Final answer: 154 cm². Answer: 154 cm²

Correct answer: 154 cm²

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