Maths Tuition Centre: Circle Fraction Question (PSLE)

circle question

Solution:

The total area is made up of 4 semicircles and four of the area X. (4S+4X)

The unshaded area is made up of 1 semicircle and one of the area X. (1S+1X)

Hence, the fraction of the figure unshaded is 1/4.

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