Find the area of the following figure.
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3.5 + 3.5 = 7cm
area of big square = side² = 7² = 49cm²
area of sector = 1/2×r² theta ....theta is in redian
area of a sector = 1/2 × 3.5 × pi/2 .....(angle of square)
= 3.5pi/4 = 0.875pi cm²
= 0.875 × 22/7 = 2.75cm²
there 4 sectors,
•°• 2.75 × 4 = 11cm²
area of 4 sector = 11cm²
area of shaded region = A(square) - A(4 sector)
= 49 - 11 = 38cm²
Area of shaded region = 38cm²
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