Ram and his friend Raj are playing with kite. The following figure shows a kite in which \(BCD\) is the shape of quadrant of a circle of radius \(42 \ cm\), \(ABCD\) is a square and \(\Delta CEF\) is an isosceles right angled triangle whose equal sides are \(7 \ cm\) long.
Based on the above information, answer the following questions.
1. Find the area of the square.
2. Area of quadrant \(BCD\) is
3. Find the area of \(\Delta CEF\).
4. Area of the shaded portion is