Area of Rectangle

By pythagoran theorem, the longer side is $\sqrt{14^2-8.4^2}=11.2$ . So the area of the rectangle is $8.4 \times 11.2 = \boxed{94.08}$ .

$x=\sqrt{14^2-8.4^2}=11.2$

$A=11.2(8.4)=$ $\boxed{94.08}$

The other side is 11,2. Using Pythagoras theorem.. So, the area of rectangle is 11,2 x 8,4 = 94,08...