Question

Find area of shaded region. Here ABCD is a square and DPBA, CPAB are quadrants

Answer 1

Area of shaded region = Area of square - (Area of quadrants)

$Area=|r^2-(\frac{\pi r^2}{4}+\frac{\pi r^2}{8})|$

$=|r^2-\pi r^2(\frac{1}{4}+\frac{1}{8})|$

$=|9^2-\frac{22}{7}{9}^2(\frac{1}{4}+\frac{1}{8})|$

$=14.46sq.units$