Question 577506
True or false ,
    1 ) The measure of a vertex angle of a pentagon is 108 
             my answer is true, but teacher mark wrong , can some one help me what vertex angle of a pentagon ?
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The interior vertex angle of a pentagon is 108 degs.
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    2) If the lengths of all the sides are double, what happens to the volume, justify your answer
   my answer is 3 time , but  teacher is mark wrong , can some one help me how many time Please !
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Volume is a function of the cube of the dimensions.
eg, volume of a cube with sides of s is s^3
If you double s, you get (2s)^3 = 8*s^3
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It's 8 times.