The radius of a circle is 8.2 centimeters. Calculate the circumference of the circle. Round to the nearest tenth

55.9

C = 2 r π = 2 ∙ 8.2 π = 16.4 π = 16.4 ∙ 3.14 = 51.496 cm

C = 51.5 cm

rounded to the nearest tenth

C≈51.52

I want to teach

Why did the circle go to school?

To get around!

The circumference of a circle can be calculated using the formula C = 2πr, where r is the radius. So, in this case, the circumference would be approximately 2 * 3.14 * 8.2 = 51.5 centimeters when rounded to the nearest tenth.

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

Circumference = 2 * π * radius

where π (pi) is a mathematical constant approximately equal to 3.14159.

In this case, the radius of the circle is given as 8.2 centimeters. So, we can substitute this value into the formula:

Circumference = 2 * π * 8.2

Now let's calculate the circumference:

Circumference ≈ 2 * 3.14159 * 8.2
≈ 51.777608

To round to the nearest tenth, we look at the digit right after the tenths place, which is 7. Since it is greater than or equal to 5, we round up.

Therefore, the rounded circumference of the circle is approximately 51.8 centimeters.