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maksim [4K]
3 years ago
8

Using similar triangles if KLM~ PQR with a scale factor of 3:5, find the perimeter of PQR (With work please)

Mathematics
2 answers:
Blizzard [7]3 years ago
7 0
Hi,


KLM = 12, 15, 6

PQR = (12 + 4 + 4), (15 + 5 + 5), (6 + 2 + 2)
PQR = 20, 25, 10

PQR Perimeter = 55

Hope this helps.
r3t40
damaskus [11]3 years ago
6 0

Answer: 55 units


Step-by-step explanation:

Given: ΔKLM~ ΔPQR  with a scale factor of 3:5

⇒\frac{sides\ of\ \triangle{KLM}}{sides\ of\ \triangle{PQR}}=\frac{3}{5}

Also ΔKLM~ ΔPQR  and the corresponding sides of similar triangles are proportional therefore,

\\\Rightarrow\frac{KL}{PQ}=\frac{LM}{QR}=\frac{KM}{PR}=\frac{3}{5}

\\\Rightarrow PQ=\frac{KL\times5}{3}=\frac{6\times5}{3}=10

Similarly,

QR=\frac{LM\times5}{3}=\frac{15\times5}{3}=25\\PR=\frac{KM\times5}{3}=\frac{12\times5}{3}=20

Now, Perimeter of ΔPQR=PQ+QR+PR=25+20+10=55\ units

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