Question 37
MediumOriginal questionThree faces of a cuboid that meet at one corner have areas 48 cm², 60 cm² and 80 cm². What is the volume of the cuboid?
Show the answer and explanation
CorrectNot quiteAnswer C
Correct answer: C
Explanation
If the edges are l, b and , the face areas are lb, bh and hl.
Their product is (lbh)², so .
Volume = cm³. (The edges are 6, 8 and 10 cm.)
Worth noting
188 is just the sum of the three areas. The product of the three face areas is the SQUARE of the volume.
- Concept
- Volume from three face areas
- Typical timeTypical
- 70 s
- Your timeYours
- —
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