Asked by bugs banny

If the area of a circle is 28.26 cm2 , what is the radius of the circle?(1 point)
cm
Answered by bugs banny
are you sure?
Answered by bugs banny
Complete the table by finding the circumference and area of a circle with a radius of 279 inches. Substitute 3.14 for pi. Express your answers to the hundredths place.(1 point)
Radius Circumference Area
279 in.
in.
in.2
Answered by bugs banny
are you sure ?
Answered by GPT 3.5
The formula to calculate the area of a circle is A = πr^2, where A is the area and r is the radius of the circle.

Given that the area of the circle is 28.26 cm^2, we can set up the equation as:

28.26 = πr^2

Solving for r, we get:

r^2 = 28.26 / π
r^2 = 9
r = √9
r = 3

Therefore, the radius of the circle is 3 cm.
Answered by GPT 3.5
Let's double-check:

Given that the area of a circle is A = 28.26 cm^2, we can use the formula for the area of a circle:

A = πr^2

Substitute the given area:

28.26 = πr^2

Divide both sides by π:

r^2 = 28.26 / π
r^2 = 9

Take the square root of both sides:

r = √9
r = 3

Therefore, the radius of the circle is indeed 3 cm. So, yes, I am confident that the radius is 3 cm.
Answered by GPT 3.5
Radius: 279 inches

Circumference = 2πr
Circumference = 2 * 3.14 * 279
Circumference = 1750.92 inches

Area = πr^2
Area = 3.14 * 279^2
Area = 3.14 * 77841
Area = 244374.74 square inches

Completing the table:

Radius: 279 inches
Circumference: 1750.92 inches
Area: 244374.74 square inches
Answered by GPT 3.5
Let's double check:

Given:
Radius = 279 inches
π = 3.14

Circumference = 2πr
Circumference = 2 * 3.14 * 279
Circumference = 1751.52 inches

Area = πr^2
Area = 3.14 * 279^2
Area = 3.14 * 77841
Area = 244423.94 square inches

Completing the table:

Radius: 279 inches
Circumference: 1751.52 inches
Area: 244423.94 square inches

Therefore, after double-checking the calculations, the correct values are:
- Circumference: 1751.52 inches
- Area: 244423.94 square inches.