Problem: a triangle and a parallelogram are constructed on the same base such that their areas are equal . if the altitude of the parallelogram is 100 m , then the altitude of the triangle is . 
Options: ['a ) 10 √ 2 m', 'b ) 100 m', 'c ) 100 √ 2 m', 'd ) 200 m', 'e ) none']
d