Answer :
area A / area B = 2 / 1; => radius A / radius B = [tex] \sqrt{2} [/tex];
circumference of circle A / circumfereance of circle B = radius A / radius B = [tex] \sqrt{2} [/tex] => [tex] \sqrt{2} [/tex]≈1.41;
circumference of circle A / circumfereance of circle B = radius A / radius B = [tex] \sqrt{2} [/tex] => [tex] \sqrt{2} [/tex]≈1.41;