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6 August, 17:46

The area of circle b is 100 times greater than the area of circle

a. the radius of circle a is 3.2. what is the radius of circle b?

a. 6.4

b. 10

c. 32

d. 100

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Answers (1)
  1. 6 August, 18:10
    0
    Let x be the radius of circle b & r=radius of the other circle

    area of b is 100 times area of te other

    Then

    π. x²=100 (π. r²)

    After simplification X=10 times the smaller radius
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