• # question_answer Area of four walls of a room is$\frac{5}{2}(8+5\sqrt{3})sq.cm$. The length and breadth of the room are 7.5 m and 3.5m, respectively. The height of the room is:                                           A) 7.7m                            B) 3.5m     C) 6.77m                          D) 5.4m

Let h be the height of the room in meter, then Area of four walls $5\sqrt{3}$ $c{{m}^{2}}$ $c{{m}^{2}}$ $\frac{77}{2}$$c{{m}^{2}}$ $\frac{25\pi }{3}$