Mathematics
Grade-7
Easy

Question

Determine the diameter of a circle having 364 inches as the circumference.

  1. 115.8
  2. 125.8
  3. 105     
  4. 185

hintHint:

The circumference of the circle is given by 2 cross times straight pi cross times straight r

The correct answer is: 115.8


    C equals 2 pi r comma
2 pi r equals 364 comma
r equals 364 cross times 7 over 22 cross times 1 half comma
r equals 57.90 comma
d equals 2 cross times 57.90 comma
d equals 115.8

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