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12 June, 13:43

144 = r (squared) 9

find the radius r

+4
Answers (2)
  1. 12 June, 13:57
    0
    144 = r^2 * 9

    divide each side by 9 to get r by itself.

    144/9 = r^2

    simplify by dividing

    16 = r^2

    take the square root of each side to solve for r

    4 = r Radius is 4
  2. 12 June, 13:58
    0
    144=r^2 times 9

    144=9r^2

    divide both sides by 9

    16=r^2

    square root both sides

    4=r

    answer is radius=4 units
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