Question

Find the area in $c{m}^2$ of the yellow region where the square has side measuring 14 cm.

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Answer 1

From the figure, 2d = 14 →r = 3.5cm.

Total area of 4 circles = $4\times \pi \times {3.5}^2=4\times \frac{22}{7}\times 3.5\times 3.5=154c{m}^2$

Area of square = ${14}^2=14\times 14=196c{m}^2$

The area of yellow portion is $=196-154=42c{m}^2$