Saturday, October 19, 2013

Q4S) A rectangular trough 8 m long and 3 m wide holds 57.6 cubic meters of water. Find the depth of the water in the trough? (2 marks)

Q5S) 2 Liters of petrol are poured into a rectangular container 25 cm long, 8 cm wide, and 25 cm deep. Find the depth of the petrol in the tank? (2 marks)

Q6S)How many 4 centimeter cubes can be cut out from of a 12 cms cube if there is no wastage? (1 mark)

Q7A) Solve the following questions:

a) x=23+87
b)23+x= 54
c)-23+2x=153
d)3z+20=100+2z
e)4x-2=50
f)x/3 +12=32
g)0.2x+0.4x=20

3 comments:

  1. Shaheer's answers

    (1)2.5 (2)2.5 (3)3


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    1. Correction:
      6S) Divide 12 by 4 cm On one side of the bigger cube you can have 3 cubes fitting to get the total number of cubes in all the bigger cube multiply 3X3X3=27 cubes fitting in altogether

      4S) Depth = 2.4 m

      5S)Height is 10cm: Solution: Total Volume of tank= 5000 Cubic cm=5 litres

      Note this: 5 litres =25 cms deep
      2 litres= ? cm deep

      Do this simple fraction: Height= 2X25/5=10 cms

      Marks= 0/5 marks

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