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Step-by-step explanation:

Hello,

You can use Pythagoras in the 4 right triangles.

For one triangle it comes .

Then for the polygon it gives .

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

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step-by-step explanation:

ever thing time 1 is a multiply by 1 it get