The bicycle tire has a radius of 13 inches. What distance will tire have traveled in a straight line after 1 revolution? Round to the nearest tenth of an inch. Please help me :) :D <3
F. 81.6 inches
G. 72.2 inches
H. 40.8 inches
J. 20.4 inches

81.6 inches (Answer F)

Step-by-step explanation:

Just find the circumference of the tire.  It is C = 2(pi)(r), which here is

C = 2(3.14)(13 in) = 81.6 inches (Answer F)

d

step-by-step explanation:

geometry: triangles

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lessons

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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