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scZoUnD [109]
3 years ago
13

A fence is shown on a blueprint and has a sides of leg the 17cm,18cm,18cm and 19cm.If themail scale on the blueprintis2cm:7cm,wh

at is the total length of the fence?please tell me how did you get it.
Mathematics
2 answers:
Phoenix [80]3 years ago
7 0
Ok so 2cm on the blueprint is actually 7cm in real life
2:7=1:3.5
for every cm on the map, it is 3.5 times that in real life

so total legnths
17 times 3.5+18 times 3.5+18 times 3.5+19 times 3.5=
59.5+63+63+66.5=
252

answer is 252cm
mario62 [17]3 years ago
7 0
The answer is 252 cm. You divide each number by two and then multiply what ever that is by 7. ( since the ratio is 2:7)
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5.\\a_0=24\\a_1=a_0+7\to a_1=24+7=31\\a_2=a_1+7\to a_2=31+7=38\\a_3=a_2+7\to a_3=38+7=45\\a_4=a_3+7\to a_4=45+7=52\\\vdots\\a_n=a_{n-1}+7\\\\Answer:\ \left\{\begin{array}{ccc}a_0=24\\a_{n}=a_{n-1}+7\end{array}\right

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