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(A)Diameter is girth divided by pi: (B)Radius is half the diameter: (C)Now, square the radius: (D)Area (“A”) is pi times this (πr2): (E)Basic tree value (“V”) is $22 times this: (F)Simplify into one fraction: (G)Substitute 31/7 for pi: (H)Make the denominator into one fraction: (I)To divide by 44/7 is to multiply by 7/44: (J)Divide both numerator & denominator by 11: