A cube of metal of 5cm is melted and casted into acuboid whose base is 2.50cm 0.50 cm find height of the cuboidalso find surface areas of cube and cuboid
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Step-by-step explanation:
cube side is 5cm
surface area= 6a^2 = 6×5×5 = 150 cm^2
base of cuboid is 2.50 cm and 0.50 cm
surface area of cube = surface area of cuboid
150 = 2(lb+ bh + hl)
150 = 2(2.50×0.50 +0.50×h +2.50×h)
150= 2(1.25+0.50h + 2.50h)
75 = 1.25 + 3h
75-1.25 = 3h
73.75 = 3h
24.58 = h
height of cuboid is 24.58
surface area of cuboid is 2(1.25+12.29+61.45)
= 2(64.99)
= 129.98 cm^2(approx)
surface area of cube is 150cm^2
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