Question

If each edge of a cuboid of surface area S is doubled, then surface area of the new cuboid is (b) 4S (c) 6S (d) 8S (a) 2 S​

Answer 1

Thanks for your question...

Your required answer :

• Let edge of cuboid are l , b and h.
• Surface area = 2 ( lb + bh + hl )

A.T.Q. :

• 2 ( 4lb + 4bh + 4hl )
• 2 × 4 (lb + bh + hl )
• 4 × 2( lb + bh + hl )
• 4 × Surface Area

Thus , surface area will increased by 4 times.

Option B is the correct answer.

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Answer 2

Step-by-step explanation:

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Let edge of cuboid are l , b and h.

Surface area = 2 ( lb + bh + hl )

A.T.Q. :

2 ( 4lb + 4bh + 4hl )

2 × 4 (lb + bh + hl )

4 × 2( lb + bh + hl )

4 × Surface Area

Thus , surface area will increased by 4 times.

Option B is the correct answer.