An Aquarium is in the form of a cuboid whose external measures are 80cm,30cm,40cm. The bottom, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed?
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Given length =80cm
breath=30cm
Height =40cm
Leatral surface area of cuboid = 2h (l+b)
=2 X 40 (80+30) = 80 X 110 = 8800cm^2
Now area of front side = l X h
80x40 =3200cm^2
And area of bottom = l X b
80 X 30 = 2400cm^2
Total area to cover with paper = Leatral area of cubot+ area of bottom - area of front
=8800+2400-3200= 8000 cm^2
breath=30cm
Height =40cm
Leatral surface area of cuboid = 2h (l+b)
=2 X 40 (80+30) = 80 X 110 = 8800cm^2
Now area of front side = l X h
80x40 =3200cm^2
And area of bottom = l X b
80 X 30 = 2400cm^2
Total area to cover with paper = Leatral area of cubot+ area of bottom - area of front
=8800+2400-3200= 8000 cm^2
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