The radii of two cones are in the ratio 21 their volumes are equal. Find the ratio of their heights.(A) 18(B) 14(C) 21(D) 41

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1.	The radii of two cones are in the ratio 2:1, their volumes are equal. Find the ratio of their heights.(A) 1:8(B) 1:4(C) 2:1(D) 4:1
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The radii of two cones are in the ratio 2:1, their volumes are equal. Find the ratio of their heights.(A) 1:8(B) 1:4(C) 2:1(D) 4:1