A box without lid is made by wood of thickness 3 cm.Its outer dimensions are 146cm multiply by 116 cm multiply by 83cm. find the cost of painting the internal surface of box at the rate Rs per 1000sq.cm.
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A box without lid is made by wood of thickness 3 cm.Its outer dimensions are 146cm multiply by 116 cm multiply by 83cm. find the cost of painting the internal surface of box at the rate Rs per 1000sq.cm.
Step-by-step explanation:
For internal body,
L=146-6=140cm
B=116-6=110 cm
H=83-3=80 cm
area painted = LB+2BH+2HL= 140*110+2*110*80+2*80*140
=15400+17600+22400=55400cm²
cost =2*55400/1000=110.8
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