The value of m in 6:8= m:12 is ____ A. 4 B. 9 C. 8 D.6, B. 9, . If 12, 21, 72, 126 are in proportion, then , C. 12 × 126 = 21 × 72, . Length and width of a field are in the ratio 5 : 3. If the width of the field is 12 m then its  , A. 20 m.

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