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Question

Three cuboids of dimensions 5cm×6cm×7cm,4cm×7cm×8cm× and 2cm×3cm×13cm are melted and a cube is made. Find the of cube.

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Solution

Dimensions of first cubiod
= 5cm×6cm×7cm
Volume=5×6×7=210cm3
Dimension of second cubiod
= 4cm×7cm×8cm
Volume=4×7×8=224cm3
Dimension of third cubiod
= 2cm×3cm×13cm
Volume=2×3×13=78cm3
Total volume of three cubes
= 210+224+78 cm3=512cm3
Volume of cube = 512cm3
Side of cube = 3512=8×8×8
= 383=8cm


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