Question

18 box 1.5 metre long 1.25 m wide and 65 M deep is to be made it is to be open at the top ignoring the thickness of the seed determine a) the area of the seat required to make the box number b ) cost of sheet , if a seed measuring 7 metre * 3.5 metre cost rupees 490​

Answer 1

Answer:

Step-by-step explanation:

Given:

Length of box =1.5 m, Breadth =1.25 m, Height =0.65 m

⇒Area to be white-washed = Area of cuboid − Area of base.

(i) Area of sheet requred =2lb+2bh+2lh−lb  

(i) Area of sheet requred =2lh+2bh+lb .....[Box is open]

=[2×1.5×0.65+2×1.25×0.65+1.5×1.25] m  

2

 

=(1.95+1.625+1.875)m  

2

=5.45 m  

2

 

ii) Cost of sheet per m  

2

 area = Rs. 20

Cost of sheet of 5.45m  

2

 area = Rs. 5.45×20

                                                  = Rs. 109