21 is a rational number because it is an integer, which can be converted into a fraction.
<u>Step-by-step explanation:</u>
When a denominater and numerator are integers and gives a quotient then it is a rational number.
21/1, where 21 is denominator and 1 is numerator the quotient is 21. Therefore 21 is a rational number which can also be considered as a ratio.
If it is repeating then it is 5/9 but if it is just 0.5 then 1/2
The third one is the answer
Answer:
29.1 cm
Step-by-step explanation:
Circumference of a circle is:
C = 2πr
Given that C = 183 cm:
183 = 2πr
r = 183 / (2π)
r ≈ 29.1 cm
The process of long division is shown here.
