1.Find the lateral and total surface area of cuboid of length 80cm, 60cm and 45cm.
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Step-by-step explanation:
LENGTH(l)=80 cm
BREADTH(b)=40 cm
HEIGHT(h)=20 cm
TSA OF CUBOID = 2(lb+bh+lh)
= 2[(80*40)+(40*20)+(20*80)] cm²
=2[3200+800+1600] cm²
=2[5600] cm²
=11200 cm²
LSA OF CUBOID=2(l+b)h
=2(80+40)20 cm²
=2(120)20 cm²
=40(120) cm²
=480 cm²
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