Wally is rebuilding his fence. Each section of the fence will have 12 vertical boards that are each eight inches wide. He's going to attach them to two horizontal pieces of wood and add a diagonal piece to brace the fence section. The horizontal pieces will be five feet apart.

How long should the diagonal piece of wood be?

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.

the answer i believe is 27 units.

step-by-step explanation:

answer is  

a.

p = 78

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

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