find the curved surface area and total surface area of a cuboid whose length breadth and height are 20cm,12cm,10cm
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TSA=2(LB+BH+HL)
=2(20*12+12*10+10*20)
=2(240+120+200)
=2(560)=1120cm^2
CSA=2(BH+LH)
=2(12*10+20*10)
=2(120+200)
=2(320)
=640cm^2
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