Find the circumference and the area of a circle with diameter

5cm
.
Use the value
3.14
for
π
, and do not round your answers. Be sure to include the correct units in your answers.

C = πd

A = πr^2 = π/4 d^2
just plug in your numbers

To find the circumference of a circle, you can use the formula:

Circumference = π * diameter.

Given that the diameter is 5 cm, we can substitute this value into the formula:

Circumference = 3.14 * 5 cm

Circumference = 15.7 cm (rounded to one decimal place)

Therefore, the circumference of the circle is 15.7 cm.

To find the area of a circle, you can use the formula:

Area = π * (radius)^2.

The radius is half the diameter, so we can calculate it as follows:

Radius = diameter / 2

Radius = 5 cm / 2

Radius = 2.5 cm

Now we can substitute this value into the formula:

Area = 3.14 * (2.5 cm)^2

Area = 3.14 * 6.25 cm^2

Area = 19.625 cm^2 (rounded to three decimal places)

Therefore, the area of the circle is 19.625 cm^2.

To find the circumference of a circle, you can use the formula:

Circumference = π x Diameter

Given that the diameter is 5cm and π is 3.14, we can substitute these values into the formula:
Circumference = 3.14 x 5 cm
Circumference = 15.7 cm

Therefore, the circumference of the circle is 15.7 cm.

To find the area of a circle, you can use the formula:
Area = π x (Radius)^2

Given that the diameter is 5cm, we can find the radius by dividing the diameter by 2:
Radius = Diameter / 2
Radius = 5 cm / 2
Radius = 2.5 cm

Substituting the values of π and the radius into the formula, we have:
Area = 3.14 x (2.5 cm)^2
Area = 3.14 x 6.25 cm^2
Area = 19.625 cm^2

Therefore, the area of the circle is 19.625 cm^2.