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Mathematics 6 Online
OpenStudy (anonymous):

how do I find the length? check out attachment

OpenStudy (anonymous):

of what?

OpenStudy (anonymous):

OpenStudy (anonymous):

cosine rule

ganeshie8 (ganeshie8):

Is it given that, ABC & DEF similar triangles ?

OpenStudy (anonymous):

@selenamalter

OpenStudy (anonymous):

@ganeshie8 they're similar

ganeshie8 (ganeshie8):

good :) then its easy

ganeshie8 (ganeshie8):

we can setup a proportion and solve it

OpenStudy (anonymous):

I solved it the answer is 18

ganeshie8 (ganeshie8):

thats right ! very good work :)

OpenStudy (anonymous):

yup

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