Foundation Mathematics Primary 6 Circles

A quarter circle has a radius of 14 cm. Find the length of its curved edge (the arc). (Take π = 22/7.)

A 22 cm
B 88 cm
C 44 cm
D 11 cm
Show Worked Solution

Worked Solution

Step 1: Find the full circumference of the circle. C = 2 × π × r = 2 × 22/7 × 14 Step 2: Simplify. 14 ÷ 7 = 2, so C = 2 × 22 × 2 = 88 cm. Step 3: A quarter circle has an arc that is ¼ of the full circumference. Arc length = 88 ÷ 4 = 22 cm. Final answer: 22 cm. Answer: 22 cm

Correct answer: 22 cm

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