A circle has a diameter of 21 meters. What is the circumference of the circle? Use 22/7 for π. (PI)

42 is the circumference

Step-by-step explanation:

a diameter is half of a shape or figure. the circumference is the whole.

so all you have to do is double the diameter and you get 42 as the circumference

Plz add brainliest if right. Hope this helps!

                                           Your answer should be:

                                                             66

                                                          Why...?

                                                         Simple.

       First, you multiply 21 by 22/7. But to make this easier you have to fix in       'improper fraction.' and make it into an improper fraction. Which will become   3 1/7. Now you multiply 21 and 3 1/7. Which will equal 66. So, 66 is your answer.

I hope this helped!!!

(Brainliest appreciated)

⊕If this answer doesn't answer your question or displeases you. Please tell me through comments.⊕

Thank you.

--- Juri Davis

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

i dont have an answer

step-by-step explanation: