The length of the cuboid is twice its breadth the breadth is twice its height find the ratio of the lateral surface to total surface area if the height is 2 cm
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given l= 2b
b = 2h
h = 2cm
b = 4cm
l= 8 cm
l.s.a of cuboid = 2h(l+b)
= 4(4+8)
=48 cm ^2
t.s.a of cuboid = 2(lb + bh + lh)
= 2(32 + 8 + 16)
= 132 cm ^ 2
l.s.a : t.s.a = 48 : 132
= 4 : 11
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