2 years ago

Find the length of AB 80° arc

Mathematics

2 answers:

Shalnov [3]2 years ago

7 0

I think it is 90. I hope this helpsb

rusak2 [61]2 years ago

4 0

Answer:

11.2

Step-by-step explanation:

The formula for an arc length is $\frac{a}{360\\}$ 2πr {a=inside angle(in this case 80°) r=radius}

Simplify this formula by dividing the bottom by two and combining pi and r with the top.

$\frac{\pi80times8 }{180}$

80 times 8 is 640, so

$\frac{640\pi }{180\\}$

plug 640 times pi into a calculator and divide by 180.

you'll get 11.170107etc

Round your answer to the nearest tenth, and you get;

11.2

Sorry the steps are so confusing!

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