Question

2. Solve both parts.

(a) A company manufactures oil drums of diameter of 2 ft and height of 4 ft. Each drum is made by cutting out the bases and lateral from a 8.5' by 4.5' steel sheet. To the nearest square foot, how much of the steel sheet is wasted?

(b)150 gold coins od diameter 20mm and height of 3mm are melted to make one solid gold ingot in the shape of a prism. If the bases of the ingots are isosceles trapezoids with bases of length 40mm and 80mm and legs of length 25mm, how long will the ingot be to the nearest mm?

Answer 1

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