Step-by-step explanation:
Diameter = 2x Radius
Radius = 1/2 Diameter

Answer:
<em>I</em><em> </em><em>think</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>is</em> <em><u>C</u></em><em><u>.</u></em><em><u> </u></em><em><u>7</u></em><em><u>1</u></em>
Answer:
3.1*10^10
Step-by-step explanation:
31 billion would be written like that because... there are 9 0's left, and that goes up to 10 because i turned 31 to 3.1 not 31, so that value after a decimal point adds 1
Put your hands on your head and breath while doing that walk around slowly until you feel cooled down
Your answer is 199cm is not equal because of 10mm equal 1cm and 100cm equal 1 meter and 100,000cm equal 1 km. Hope this helps.