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14 March, 04:04

What is the radius of a circle with a sector area of 7 sq. ft. and an arc whose measure is 70°?

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Answers (2)
  1. 14 March, 04:24
    0
    360 degrees in circle

    70/360 of full circle=7square feet

    7/36 of full circle=7 squre feet

    times both sides by 36/7

    full circle=36 square feet

    area=pir^2

    36=pir^2

    divide oth sides by pi (use 3.141592)

    11.459=r^2

    sqrt both sides

    3.3851

    about 3.4ft
  2. 14 March, 04:32
    0
    the radius is 6 feet.
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