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Find the height of a cuboid of total surface area 94 sq cm, if its length and breadth are 4m and 5m respectively ?
  • a)
    1 cm
  • b)
    2 cm
  • c)
    3 cm
  • d)
    4 cm
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Find the height of a cuboid of total surface area 94 sq cm, if its len...
Let h be the height, then
2(lb+bh+hl) = 94
2(20+4h+5h) = 94
(20+9h) = 47
9h = 27
h = 3
So the answer is option C.
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Most Upvoted Answer
Find the height of a cuboid of total surface area 94 sq cm, if its len...
Given data:
Total surface area of the cuboid = 94 sq cm
Length of the cuboid = 4 cm
Breadth of the cuboid = 5 cm

Calculation:
Let the height of the cuboid be h cm.

Total Surface Area of a Cuboid:
Total Surface Area = 2(lb + bh + hl)
94 = 2(4*5 + 5h + 4h)
94 = 2(20 + 9h)
94 = 40 + 18h
18h = 54
h = 54/18
h = 3 cm

Therefore, the height of the cuboid is 3 cm.
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Find the height of a cuboid of total surface area 94 sq cm, if its length and breadth are 4m and 5m respectively ?a)1 cmb)2 cmc)3 cmd)4 cmCorrect answer is option 'C'. Can you explain this answer?
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