B
A cylindrical drum 1.5 m in diameter and 3 min height is full of water. Th water is emptied
into another cylindrical tank in which water rises by 2 m. Find the diameter of the second
cylinder up to 2 decimal places,
A) 1.74 m
B) 1.94 m
C) 1.64 m
D) 1.84 m
A cylindrical drum 1.5 m in diameter and 3 min height is full of water. Th water is emptied
into another cylindrical tank in which water rises by 2 m. Find the diameter of the second
cylinder up to 2 decimal places,
A) 1.74 m
B) 1.94 m
C) 1.64 m
D) 1.84 m
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Answer:
Volume of water in tub=πr
2
h=π×5
2
×9.8cm
3
Volume of Hemishpere=
3
2
×π×3.5
3
cm
3
Volume of cone=
3
1
π×3.5
2
×5cm
3
Volume of water left in the tub = Volume of water in tub-Volume of toy
Volume left = π×25×9.8−(
3
2
×π×3.5
3
+
3
1
π×3.5
2
×5)
V=π(245−49)=
7
22
×196=22×28=616cm
3