Calculate the cost of making a cuboid of edges 5cm ,7cm,12cm,if the cost of 1cm, is #1.75

1 answer

The total surface area of the cuboid is:

2(5x7 + 7x12 + 12x5) = 2(35 + 84 + 60) = 2(179) = 358 cm^2

The cost of making 1 cm^2 is #1.75, so the cost of making 358 cm^2 is:

358 x #1.75 = #625.5

Therefore, the cost of making a cuboid of edges 5cm, 7cm, and 12cm is #625.5.