Find the area of a circle with a diameter of 16 units.
Exact Area:
Approx Area (use 3.14 for pi):
Approx Area (use 22/7 for pi):

Respuesta :

Answer:

  • exact: 64π square units
  • 3.14 for π: 200.96 square units
  • 22/7 for π: 201 1/7 square units

Step-by-step explanation:

You want the area of a 16-unit circle using different values for pi.

Area

The formula for the area of a circle is ...

  A = πr² . . . . . . where r is half the diameter

For the different values of pi, this will be (in square units) ...

  π(8²) = 64π . . . . exact

  3.14(8²) = 200.96 . . . . using 3.14 for π, slightly low

  22/7(8²) = 201 1/7 . . . . using 22/7 for π, slightly high

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