Three cubes of metal with edges 5c
cube. Find the lateral surface arethree cubes of metal with edges 5 cm 4 cm and 3 cm respectively are melted to form a single cube find the lateral surface area of the new cube formed
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The lateral surface area of a cube is 6×side²
Volume of a cube is side³
Surface area of cube with edge
5cm = 6×5×5 = 150cm²
4cm = 6×4×4 = 96cm²
3cm = 6×3×3 = 54cm²
Volume of new cube is 5³+4³+3³ = 216cm³
Volume = side³
216^1/3 = side
hence side is 6cm
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