Question

Find the area of the shaded region in the figure shown.

Answer 1

Area of shaded region $=$ Area of $14$cm square $-4\times$ $[$ sector of ${90}^o$ with radius $7$cm$]$

$=(14{)}^2-4(\frac{90}{360}\times \pi \times 7\times 7)$

$=(14{)}^2-22\times 7$

$=42c{m}^2$.