Question 1

Circle A has a circumference of

16units. Circle B has an area of 25square units. Which circle has the bigger radius?

Question 2

#Circle A

$\\ \bull\tt\longmapsto 2πr=16$

$\\ \bull\tt\longmapsto 2(3.14)r=16$

$\\ \bull\tt\longmapsto 6.28r=16$

$\\ \bull\tt\longmapsto r=(16)/(6.28)$

$\\ \bull\tt\longmapsto r=2.6units$

#Circle B

$\\ \bull\tt\longmapsto πr^2=25$

$\\ \bull\tt\longmapsto r^2=(25)/(π)$

$\\ \bull\tt\longmapsto r=\sqrt{(25)/(π)}$

$\\ \bull\tt\longmapsto r=(5)/(√(π))$

$\\ \bull\tt\longmapsto r=(5)/(√(3.14))$

$\\ \bull\tt\longmapsto r=(5)/(1.74)$

$\\ \bull\tt\longmapsto r=2.94units$

Circle B has bigger radius

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