The total surface area of a cuboid is 194 m². If its length is 8 m and breadth…
2019
The total surface area of a cuboid is 194 m². If its length is 8 m and breadth is 6 m, then what is its volume (in m³)?
- A.
112
- B.
126
- C.
168
- D.
224
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Correct answer: C
Total surface area = 2(lb + bh + hl) = 194. With l = 8 and b = 6, 2(48 + 6h + 8h) = 194, so 48 + 14h = 97 and h = 3.5. Volume = 8 x 6 x 3.5 = 168 m^3.