Dallasb22
What is the area of a sector with radius 10" and measure of arc equal to 45°?



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campbell_st
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what fraction of a circle is an angle of 45..?
the Sector Area = fraction x pi x r^2

Dallasb22
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1/8 times pi times 100??

campbell_st
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thats it.. well do... to get the fraction just use 45/360 the multiply by the area of the circle

Dallasb22
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So do what next?

campbell_st
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just multiply it out...
the answer should be just less that 40 in^2

Dallasb22
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25/2 pi?

campbell_st
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you thats the exact answer..