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The problem of the sixth grade class exercise book! ! Help! Help! Help! ! This question is too difficult! Abnormal problem! ! !
14x9x2=252 (cubic centimeter)

Solution: Let the volume of the cone be x cubic centimeters.

x+3x x( 1- 1/6)=252

x+3x x5/6=252

x+5/2x=252

3.5x=252

x=72

(Note: 1/6 is one sixth, and 5/2x is five thirds x)