A regular hexagonal prism has its perimeter of base as 240 cm and height 100 cm. Find weight of petrol (in kg) it can hold if density is 0.9 gm/cc.
Explanation:
Side of the base hexagon = 240/6 = 60 cm
Area of the regular hexagon = 6 × √3/4 × (60)2 = 5400√3
Volume = Base × Area = 5400√3 × 100 = 540000√3 cm3
⇒ Weight = 540000√3 × 0.9 = 486000√3 gms = 486√3 kg.
Hence, option (d).
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