She will need 5 and a half hours. First step is to do 360-112.5 the pgs she read and her goal. then you'll get 247.5. To find how many hours you need to find the unit rate. so 247.5 divided by 45 is 5.5 hours.
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The answer is 241.6 ft^2 which is b.
The given radii of 4 and 6 and the sector angle of 112°, gives;
<h3>How can the measure of the shaded portion be found?</h3>
The possible figure that relates to the question can be described as follows;
Two concentric circles having radii of AE = 4, and AB = 6, respectively.
Sector of the circles formed by lines AC and AB, with angle of sector = 112°
The shaded portion is described by arcs FE and CB
Therefore;
Area of the sectors are found as follows;
Area of the shaded portion, <em>A </em>is therefore;
Learn more about the sectors of a circle here:
brainly.com/question/22972014
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