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The temperature of an isotropic cubical ...

The temperature of an isotropic cubical solid of length `l_(0)`, density `rho_(0)` and coefficient of linear expansion `alpha` is increased by `20^(@)C`. Then at higher temperature , to a good approximation:-

A

Length is `l_(0)(1+20alpha)`

B

Total surface area is `l_(0)^(2)(1+40 alpha)`

C

Total volume is `l_(0)^(3)(1+60alpha)`

D

Density is `(rho_(0))/(1+60 alpha)`

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