Question

the radius of a circle is 1.8 ft. find the circumference to the nearest tenth.

Explanation:

Step1: Recall the formula

The formula for the circumference of a circle is $C = 2\pi r$.

Step2: Substitute the radius value

Given $r = 1.8$ ft, so $C=2\pi\times1.8$.

Step3: Calculate the value

$C = 3.6\pi\approx3.6\times3.14 = 11.304$ ft.

Step4: Round to the nearest tenth

Rounding $11.304$ to the nearest tenth gives $11.3$ ft.

Answer:

$11.3$ ft