Q: What is the perimeter of a circle with a diameter of 5 cm?

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5 cm

diameter = radius × 2 → radius = diameter ÷ 2 = 10 cm ÷ 2 = 5 cm

10 cm

A circle of radius 10cm has a circumference of 2πr cm = 2π x 10 = 62.83 cmIf the diameter equalled 10cm then the radius equalled 5 cm and the circumference of this circle = 2π x 5 = 31.42 cm

The perimeter is 7 cm

Related questions

cicumference = pi*5 cm area = pi*2.52 square cm

Perimeter = diameter x pi. Area = pi x radius2. (The radius is half the diameter.)

10 cm; the diameter of a circle is twice its radius.

10 cm

radius 5 cm diameter 10 cm

10 cm (diameter is double the radius)

5 cm

it is half the diameter e.g 10cm diameter = 5 cm radius

If the diameter of the circle is 5 cm then its circumference is: 5*pi cm

Pi times the diameter of a circle gives its circumference. Since the radius is 5 cm, the diameter is 10 cm, and pi x 10 cm is the answer, or 31.4159 cm.

Around 19.634375 cm

Perimeter(Circumference) = pi x 5 = 3.1415 x 5 = 15.7075 cm Area = pi x 2.5 x 2.5 = 3.1415 x 6.25 = 19.624 square cm