Find the surface area of cuboid.
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curved surface area of cuboid is 2h(l+b)
given that
length =5whole1/2cm=11/2cm
breadth =4cm
height=10whole1/2cm=21/2cm
=2×21/2(11/2+4)
=2×21/2(11+8/2) simplify
=21(19/2)
=399/2
=199.5
the surface area of cuboid is 199.5cm²
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