Question

if we have a cuboid whose length, breadth and height are 15 cm, 10 cm and 20 cm respectively, then its surface area would be:

Answer 1

l=15cm
b=10cm
h=20cm
TSA=2L.B+2.B.H+2H.L
=2×15×10+2×10×20+2×20×10
=300+400+400
=1100cm²

Answer 2

l=15
b=10
h=20

sa=2(15×10+10×20+20×15)

sa=2(650)

sa=1100cm2

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