find total surface area and curved surface area of a cuboid whose dimensions are 15 x 12 X 4.5 m
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It is given that length =12 cm, breadth 8 cm and height =4.5cm
We know that
Volume of cuboid =l×b×h
Volume of cuboid =12×8×4.5
Volume of cuboid =432 cm 3
We know that
Lateral surface of a cuboid =2(l+b)×h
Lateral surface area of a cuboid =2(12+8)×4.5
Lateral surface area of a cuboid =2×20×4.5
Lateral surface area of a cuboid =180cm2
We know that
Total surface area of cuboid =(Ib+bh+Ih)
Total surface area of cuboid
=2(12××8+8×4.5+12×4.5)
Total surface area of cuboid =2(96+36+54)
Total surface area of cuboid =2×186
Total surface area of cuboid =372 cm2
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