The circumfrence of a circle with the diameter of 5 cm is 15.7. what is the ratio of the circumfrence to the diameter?

Divide the circumference over the diameter

(circumference)/(diameter) = (15.7)/(5) = 3.14

This is approximately equal to pi

7

step-by-step explanation:

the answer would be 7

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+

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