solving the equation
we get 
Step-by-step explanation:
Solve the equation:

We can solve using quadratic Formula:

a= 1, b = -12, c = 40
Putting values:

So, solving the equation
we get 
Keywords: Solving quadratic equation
Learn more about Solving quadratic equation at:
#learnwithBrainly
Answer:
20 cm.
Step-by-step explanation:
First, find the perimeter in inches. Since it's a square and all 4 sides are the same, you can multiply 2 x 4 to find the perimeter of 8. Now, convert it to cm by multiplying 8 by 2.5. 8 x 2.5 is 20 cm.
Answer:
what
Step-by-step explanation: