Please help me!
Joe uses a wheelbarrow to haul wood from the back of his yard to his neighborhors house located 9 kilometers away if he takes three brakes evenly when pushing the wheelbarrow at the complet distance at what distance does he take his first brake?
joe has 36 pieces of wood to take but can only take 9 each time.
what distance in meters will he travel to move all the wood?

the firs brake is when he is starting to take wood piceses. 6300 meters hi will travel to take all the woods.

geometry: triangles

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answers archive

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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