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hello patulong po please thank you.​

Hello Patulong Po Please Thank You class=

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FRANCISPO2007IN

Answer:

The middle layer's diameter is 16 inches.

Step-by-step explanation:

let the middle layer's diameter be x+12
x+12= (20)1/2
x+12-12= (20-12)/2
x=8/2
x=4
now that we know that x equals to 4, we now need to it add to the original equation
4+12=16

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