Three cubes with and 3 cm 4 cm and 5 cm are melted and recast into a single cube find the surface area of the cube
Answers
Answered by
2
Hence 216cm2... .....
Attachments:
Answered by
2
Volume of the new cube=sum of volumes of the three individual cubes
=3^3 + 4^3 + 5^3
=27 + 64 + 125
=216
Since the area of the cube is 216,
a^3=216
So a= 6
Surface area of the cube is 6a^2
= 6 x 6^2
= 216 square centimeter
=3^3 + 4^3 + 5^3
=27 + 64 + 125
=216
Since the area of the cube is 216,
a^3=216
So a= 6
Surface area of the cube is 6a^2
= 6 x 6^2
= 216 square centimeter
Similar questions