Answer:
The answer is 399.6 not 399.4. I put 399.6 as my answer on acellus and I got it right.
Explanation:
the formula for the area of a sector is
(x°(r^2)π)/360
with x being the angle
r bring the radius of the circle
(255(13.4)^2π)/360
399.6
Hope that helps :)
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