The approximate radius, r, of a circle with an area, A, is r=0.32^1/2.

Find the approximate radius of a circle with an area of 16 cm2.

Question

The approximate radius, r, of a circle with an area, A, is r=0.32^1/2.   Find the approximate radius of a circle with an area of 16 cm2.

RobertKer · Answer

Answer:   radius (r)= 2.25     Step-by-step explanation:   area (A)=16cm^2           A = πr^2           16= (22/7)r^2           (16*7)/22=r^2           √5.09= r            r=2.25

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