# A cuboidal oil ti

Given,

length (l) = 30 cm

height (h) = 50 cm

Area of tin = total surface area of cube

= 2(lb +bh + hl)

= 2[(30)(40) + (40)(50) + (50)(30)]

= 2[1200 + 2000 + 1500]

= 2 × 4700

= 9400cm2

Cost of tin = Rs. 20 per cm2

cost of 1 tin = 9400 × 20

= Rs 188000

Cost of 50 such tin = 50 × cost of 1 tin

= 50 × 188000

= 9400000

So, cost of such 50 cans is Rs 9400000

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