find the cost of painting all around outer surface of a box with lid 60 cm long 40 cm wide and 30 cm high at 50 paise per 20 CM square
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Answered by
4
Total surface of the cuboid
2(60*40 + 40*30 + 60*30)
is 10800 cm^2
Cost of the painting
50*10800 / 20
is 27000 paise
2(60*40 + 40*30 + 60*30)
is 10800 cm^2
Cost of the painting
50*10800 / 20
is 27000 paise
Answered by
5
TSA of box =2(lb+bh+hl)
=2(60*40+40*30+30*60)
=2(2400+1200+1800)
=2(5400)
=10800 Sq.cm
cost of painting =[(50/20)*10800] paise
=27000 paise
=270 Rupees
=2(60*40+40*30+30*60)
=2(2400+1200+1800)
=2(5400)
=10800 Sq.cm
cost of painting =[(50/20)*10800] paise
=27000 paise
=270 Rupees
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