Question

Sami
18. In Diagram 1, a water tank in the shape of a circular cylinder of radius 24 cm and height 125 cm is open at one end and is full
of water. In Diagram 2, a rectangular trough of length 150 cm and width 20 cm is shown.
(a) 1.2
Diagram 1
Diagram 2
On the basis of above information, answer the following questions :
(i) The volume, in litres, of water tank is :
(a) 94
(b) 188
(c) 226
(d) 306
(ii) The total area, in square metres, of the outside of the open tank, is :
(b) 1.6
(c) 1.8
(d) 2
(iii) If the trough is completely filled with 48000 cu cm of water from the tank, the depth of the trough is :
.(a) 16 cm
(b) 12 cm
(c) 8 cm
(d) 5 cm
(iv) After the trough had been filled, water started to leak from the tank. In 2 hours 30 minutes it was found that 20,000 cu cm
ran out the tank. The rate at which the level of water in the tank was falling is :
(a) 4.42 cm/h
(b) 5.1 cm/h
(c) 5.4 cm/h
(d) 6.2 cm/h
1 ffonne in the canarities of the tank and the trough is :
1​

Answer 1

Answer:

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Answer 2

Answer:

after the trough had been fillef