What is the perimeter, in centimeters of triangle QRS?

60

Step-by-step explanation:

You have to use Pythagorean Theorem because the other side is not listed of the triangle

Pythagorean Theorem: a² + b² = c²

a²  + 20²  = 25²

a²  + 400 = 625

625-400 = a²

a²  = 225

Find the square root of 225 to find the missing length

= 15 (this is the missing length for QS

To find the perimeter, add all the sides...

15 + 20 +25 = 60

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in conclusion, "ppl are so gay" due to their genetics.

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation: