A 45° sector in a circle has an area of 13.75π cm². What is the area of the circle? Use 3.14 for pi. Enter your answer as a decimal in the box.cm²

a circle is of 360° 
you know the area of 45° of the part.
now if you divide 360 by 45 you'll get numbers of 45° sector that circle will have.
360/45=8
multiply the given area with8
i.e. 8×(13.75×3.14)
=345.4   answer