Question

The sum of the length breadth and depth of a cuboid is 20 cm and its diagonal is 4√5cm , then its surface area is a _______
1)400 cm²
2) 420 cm²
3)300 cm²
4)320cm²​

Answer 1

Answer:

320cm²

Step-by-step explanation:

Explanation is attached above

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Answer 2

Answer:

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