Mathematics
Grade9
Easy

Question

A cone-shaped hole is cut out of a cube. How much of the cube is left? Round your answer to the nearest cubic centimeter.

  1. 216 cm3
  2. 25 cm3
  3. 100 cm3
  4. 191 cm3

hintHint:

The amount of cube left = volume of the cube - volume of the cone

The correct answer is: 191 cm3



    Volume of cube is 63

    = 216 centimeters3
    Volume of cone is
    Volume equals 1 third πr squared straight h
    equals 1 third cross times straight pi cross times 2 squared cross times 6
equals 8 straight pi
    Volume = 25 cm3
    Part of cube left = 216 – 25 = 191

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