Question

a cuboid tank 12 long 8 metre wide and 5 metre deep is to be made it is only at the top determine the cost of the iron sheet at the rate of 3.5 per metre if this is four wide​

Answer 1

Answer:

Length= 12m

Breadth= 8m

Height= 5m

C.S.A of cuboidal tank= 2(l+b)*h-lb

= 2(12+8)*5-8*5

= 2*20*5-40

= 200-40

=160m²

Cost of 1m²= Rs 3.5

Cost of 160m²= Rs 3.5*160

= 560m²