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Question 1. Asked on :15 January 2019:09:31:00 AM

 The length, breadth and height of room are 5m, 4m and 3m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of s. 7.50perm2

-Added by Prince Rawat Mathematics » SURFACE AREAS AND VOLUMES

Answer:

Himanshi Verma

 l=5m    b=4m      h=3m 

The total area of cuboid = 2(lb+bh+hl)+l×b

                                  = 2(5×4+4×3+3×5)+5×4

                                  = 2(20+12+15)+20

                                  = 2(47) +20

                                  =    94+20

                                  =     114m2

The cost of white washing the wall and the ceiling of the room = 7.50 per m2

      The cost of 114m2 of the walls and ceiling of the room= (7.50×114)Rs

                                                                                   = 855.00Rs.

                                                                            

-Answered by Himanshi Verma On 19 January 2019:05:10:07 PM(844Average Rating Based on rating)

Answer:

Master Purushottam

 l=5m    b=4m      h=3m 

The total area of cuboid = 2(lb+bh+hl)+l×b

                                  = 2(5×4+4×3+3×5)+5×4

                                  = 2(20+12+15)+20

                                  = 2(47) +20

                                  =    94+20

                                  =     114m2

The cost of white washing the wall and the ceiling of the room = 7.50 per m2

      The cost of 114m2 of the walls and ceiling of the room= (7.50×114)Rs

                                                                                   = 855.00Rs.

-Answered by Master Purushottam On 24 August 2019:12:04:01 AM(4836Average Rating Based on rating)

 

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