Can anyone me ! part of the arena is being turned into a public darkroom. the floor needs covering in rubber tiles before work can begin on the dark room. the tiles are 20 cm by 30 cm. the dark room floor is 6 metres by 3 metres. are 280 tiles enough? how many more/less tiles are needed?

i can't solve unless i know what the line is

step-by-step explanation:

welcome to/p>

geometry: triangles

solvers

lessons

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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