Mathematics

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• Six-digit primes
  Find all six-digit prime numbers that contain each one of digits 1,2,4,5,7 and 8 just once. How many are they?
• Find diagonal
  Find diagonal of cuboid with length=20m width=25m height=150m
• A cylindrical tank
  A cylindrical tank can hold 44 cubic meters of water. If the radius of the tank is 3.5 meters, how high is the tank?
• Final exam
  There are 5 learners in a class that has written a final exam Aleta scored 55% vera scored 36% and Sibusiso scored 88% if Thoko scored 71% and the class average was 63%. What was Davids score as a percentage?
• Allan
  Allan keeps tropical fish. His aquarium is 4 feet long, 1 foot wide, and 2 feet tall. Each fish needs at least 0.5ft³ of water. What is the maximum number of fish that he can keep in the aquarium? Please show your solution. Please
• Find the 7
  Find the volume of a volleyball that has a radius of 4 1/2 decimeters. Use 22/7 for π
• The volume 2
  The volume of a cube is 27 cubic meters. Find the height of the cube.

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