An archery target with a radius of 60 cm has 7 scoring zones by concentric circles. the radius of the center black circle is 10 cm . if an arrow hits the target at a random. point, what is the probability that it hits the center black zone? ​

you can not drow on this

step-by-step explanation:

42

step-by-step explanation:

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

d

because parallelagram have all 4 angels the same size dependeing and a rectangle and square are oth parallelogram