Question

Oil tins of cuboidal shape are made from a metallic sheet with length 8m and breadth 4m.
Each tin has dimensions 60 x 40 x 20 in cm and is open from the top. Find the number of such
tins that can be made.​

Answer 1

Answer:

50

Step-by-step explanation:

total surface area=2(lb+bh+lh)

in this case t.s.a.=2(lb+bh+lh)-lb (because 1 side is open)

so,2(60×40+40×20+20×60)-60×40 (inserted given values)

=6400cm²

given sheet is 800×400=320000cm²

so,we can make 320000÷6400=50 tins