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Geometry · Circles

Area of a circle with radius 7

7

Step by step

  1. r = 7

    Everything about a circle follows from its radius.

  2. d = 2r = 14

    Diameter.

  3. C = 2\pi r = 14 \pi \approx 43.982

    Circumference.

  4. A = \pi r^2 = 49 \pi \approx 153.94

    Area.

Reveal the answer
C = 14 \pi,\quad A = 49 \pi