A right triangle ABC is similar to triangle PQR such that the hypotenuse BC=10 and the hypotenuse QR=4. If AC=8, then what is th
e length of PR? Round your answer to the nearest tenth.
1 answer:
Answer:
PR = 3.2
Step-by-step explanation:
We can use proportions to solve this problem. Put the first triangle side over the second triangle side.
BC AC
-------- = ----------
QR PR
Substituting in values
10 8
-------- = ----------
4 PR
Using cross products
10 PR = 8*4
10 PR = 32
Divide by 10
10 PR/10 = 32/10
PR = 3.2
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