Eight cuboidal metal boxes each with dimensions 60 cm*45cm *30cm are to be painted. If the rate of painting is rupees 200 per m square ,find the total cost of painting
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aera of a box = 2(lb+ bh + hl)
= 2( 60x45 + 45x30 + 30x60)
=11700
area of 8 boxes= 93600
cost of painting = 93600x 200
= 18720000
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