A cannon balls has the same range R on a horizontal plane for two angles of projection. If h1 and h2 are the greatest heights in the two paths for which this is possible, then:
(A) Root h1h2
(B)Root . 4h1h2.1/4. .1/4 Root
(C) Root 3h1h2
(D) . .1/4 Root.1/4Root h1h2
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