61. Exemplar exercise problems XXXVII

Floor of a room is of dimensions $5 \ m \times 4 \ m$ and it is covered with circular tiles of diameters $50 \ cm$ each as shown in the given figure. Find the area of floor that remains uncovered with tiles. (Use $\pi = 3.14$)

 

 

Area of floor remains uncovered $=$ $m^2$