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प्रश्न
Find the lateral surface area and total surface area of a cuboid of length 80 cm, breadth 40 cm and height 20 cm.
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उत्तर
It is given that
Cuboid length= 80cm= L
Breath = 40cm=b
Height=20cm=h
WKT,
Total surface area = `2[lb+bh+hl]`
`=2[(80)(40)+40(20)+20(80)]`
`=2[3200+800+1600]`
`=2[5600]`
`=11,200cm^2`
`"Lateral surface area" = 2[l+b]h=2[80+40]20`
`=40(120)`
`=4800cm^2`
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