MathematicsIf one side of a cubical box is 30 cm and cost of 100 sq.cm canvas is Rs.3, then the cost of canvas to cover it is

If one side of a cubical box is 30 cm and cost of 100 sq.cm canvas is Rs.3, then the cost of canvas to cover it is

Side of cubical box

$a = 30 c m$

T.S.A.

$= 6 a 2 = 6 × 30 × 30 c m 2$

Cost of 100

$c m 2 = R s .3$

Cost of canvas

$= 6 × 30 × 30 100 × 3$

$= R s .162$

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