Find the area of a sector with a central angle of 32° and a radius of 8.5 millimeters.?

Question

I keep getting 6.4 but thats not one of the choices.. help please!!!

Answer 1

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The area of a sector is given by the equation A = ½r²θ, where θ is in radians.

Alternatively, if want θ in degrees, you could use the formula A = πr²(θ/360).

32° = 8π/45 rad

A = ½(8.5)²(8π/45) = 20.176

Make sure your calculator is in the appropriate mode.

Answer 2

Area=(m/360)*Pi*r^2

m= measurement of central angle

r= radius

(32/360)*π*8.5²=20.17600615

(32/360)*3.14*8.5²=20.16577778

hope this helped :]

Source(s): http://library.thinkquest.org/20991/gather/formula...