Question

Three cubes whose edges measure 3cm, 4cm and 5cm respectively are melted
to form a new cube. Find T.S.A of the new cube.​

Answer 1

Step-by-step explanation:

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$let \: x \: cm \: be \: the \: edge \: of \: the \: new \: cube. \\ \\ then \: the \: volum \: of \: the \: new \: cube \: = sum \: of \: the \: volume \: of \: three \: cubes \: \\ \\ {x}^{3} = {3}^{3} + {4}^{3} + {5}^{3} = 216 \\ \\ {x}^{3} = {6}^{3} = x = 6cm \\ \\ the \: edge \: of \: the \: new \: cube \: is \: 6cm \: long \: \\ \\ surface \: area \: of \: the \: new \: cube \: = {6x}^{2} = 6 \times {6}^{2} {cm}^{2} = 216 {cm}^{2}$

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Answer 2

Step-by-step explanation:

Ohm's Law Statement : Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature, remain constant.