A thin, flat object in which a square hole \(30.0 \mathrm{~mm}\) on a side has been cut is illuminated with a point source. Light that passes through the hole strikes a screen \(300 \mathrm{~mm}\) behind the object. Call the direction normal to the screen the \(z\) direction. The point source is shifted away from the center of the hole by \(150 \mathrm{~mm}\) in the positive \(x\) direction. The point source is centered on the hole in the \(y\) direction and is \(300 \mathrm{~mm}\) in front of the object in the \(z\) direction. What are \((a)\) the dimensions of the bright region on the screen and (b) the \(x\) and \(y\) coordinates of the perimeter of the bright region?