MCQ
A conical vessel whose internal depth is 42cm and internal diameter is 48cm is full of water. If 1 cubic dm of water weight 1kg wt, then the weight of water in the conical vessel is:
- A26.5 kg wt.
- B25.5 kg wt.
- C25.65 kg wt.
- D25.344 kg wt.
✓
Answer
- 25.344 kg wt.
Solution:
Volume of conical vessel $=\frac{1}{3}\times\pi\times\text{r}^2\times\text{h}$
$=\frac{1}{3}\times\frac{22}{7}\times24\times24\times42$
= 25344cm3
= 25.344 dm3 (1dm3 =1000cm3)
= 25.344 Kg wt. (1 kg - wt = 1dm3)
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