Question

Find the surface area of a cuboid whose length breadth height are 20 cm 15 cm 12 cm

Answer 1

Answer:Here is your answer:

Step-by-step explanation:

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

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Answer 2

Answer:

Step-by-step explanation:

surface  area of cuboid = 2(l*b+b*h+h*l)sq units

so  length = 20 cm

breadth = 15 cm

height = 12 cm

therefore = 2(20*15+15*12+12*20)

            =  2(300+180+240)

            =  2(720)

            = 1440 cm²