If we divide the area we have to cover by the area of a piece, we will get the number of pieces needed:

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<u> 4 x² = 64</u>
Divide each side by 4 : x² = 16
Take the square root
of each side: x = √16
x = <em>+ 4</em>
and
x = <em>- 4</em> .
Solve the equation for x by find the A , B , C of the quadratic then applying the quadratic formula
Step-by-step explanation:
Given radius, r = 5,
Circumference of Circle, C
