Subject :NSO Class : Class 7
A hall is 36 m long and 24 m broad allowing 80 m2 for doors and windows. The cost of papering the walls at Rs. 8.40 per m2 is Rs. 9408. The height of the hall is ______.
(A) 12 m
(B) 5 m
(C) 10 m
(D) 8 m
plz explain