maths (area and volume) URGENT*
2008-09-02 6:08 am
A right cylindrical container 8 cm in base diameter contains water. 6 metallic balls of radii 2 cm are put into the container. If all the balls are immersed and no water overflows, find the rise in water level.
回答 (2)
2008-09-02 6:22 am
✔ 最佳答案
The cylinder can be of infinite height, which guarantees no water will overflow.All calculations are in centimetres.
Cross section area of cylinder = pi r^2 = pi d^2/4 = 16pi
volume of each metallic ball = 4 pi r^3 / 3 = 4 pi 2^3 / 3 = 32/3 pi
volume of 6 balls = 32/3 pi * 6 = 64 pi
Rise in water level
= volume of balls / cross section area of cylinder
= 64 pi / 16 pi
= 4 cm.
2008-09-02 6:11 am
You don't have height!
收錄日期: 2021-04-13 16:02:05
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