4. What is the diameter of a CD with a circumference of 36 centimeters? Round to the nearest tenth. Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.​ First correct will be brainlist

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

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.

hello! just here for points! though i wish i knew!