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Question

Find the surface area of a cuboid:
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  1. 120 unit 2
  2. 130 unit 2
  3. 140 unit 2
  4. 110 unit 2

A
120 unit 2
B
140 unit 2
C
110 unit 2
D
130 unit 2
Solution
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Surface area =2(Length × width + Length × height + Width × height)

Length =5 units; Height =5 units; Width =4 units

=2×(5×4+5×5+4×5)

=2×(20+25+20)

=2×65

=130 unit 2

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