The radius of a circle is 3.5 in. Find the circumference to the nearest tenthto the nearest tenth.
The circumference of a circle is found using the formula:
Circumference = 2πr
where r is the radius.
Thus, in this case:
Circumference = 2π(3.5)
Using a calculator to get the approximate value of π (pi) as 3.14159, we have:
Circumference ≈ 2(3.14159)(3.5)
Circumference ≈ 21.991
Rounding to the nearest tenth, the circumference is approximately 22.0 inches.