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SASMO 2027 · Grades 4-5 · SET 005 · Self-study Question 10

SASMO · SASMO 2027 · Grades 4-5 · SET 005 · Self-study

Question 10

Find the total shaded area in the figure, in cm². Each circle has radius 20 cm. Use π = 3.14.

The source leaves some arc construction implicit. Use its intended symmetric construction: each lens is bounded by equal 90° arcs of radius 20 cm, and the four arc endpoints in each main circle form an inscribed square.

Question illustration