Question

the Length breadth and height of a hall 10 m 8 metres and 6 m respectively the hall has two door of area 2 m× 1.5 metre and 3 window whose area 1.5 ×1 m find the cost of the painting walls at the rate of 180 rs per square metre

Answer 1

LSA of Hall = 2(lh + bh)
= 2(60 + 48)
= 2(108) = 216 m^2
Area of doors
= 2 x 2 x 1.5 = 6 m^2
Area of windows
= 3 x 1.5 x 1 = 4.5 m^2
Area of walls
= 216 - ( 6 + 4.5 )
= 216 - (10.5)
= 216 - 10.5 = 205.5 m^2
Cost of painting
= 205.5 x 180
= ₹36990
Cost of painting the walls of the Hall is ₹36990