Find the cost of a painting of a cuboid whose dimensions are 20 CM by 15 cm and 12 at the rate10 Paisa per square CM?
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Step-by-step explanation:
Dimensions of cuboid = 20cm by 15cm by 12 cm
Total Surface area = 2(lb+bh+lh)
= 2(20×15+15×12+12×20)
= 2(300+180+240)
= 2×720
= 1440 sq.cm
Cost of painting = 12 P/sq.cm
Cost for painting cuboid = 1440×12
=17280P
= ₹ 172.80 (₹1= 100P)
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