Answer:

Step-by-step explanation:
The figure is made up of a rectangle and two semicircles.
We find the area of the rectangle using the formula;



We find the area of one of the semicircles and multiply by 2;
The area of the semicircles

We substitute
and
to obtain;



The area of the figure is


To the nearest tenth we have;

The correct answer is A
Using the given information, the area of figure B is 315 ft²
<h3>Calculating Area </h3>
From the question, we are to calculate the area of figure B
In the given diagram, figure B is made up of a triangle and a square
∴ Area of figure B = Area of triangle + Area of square
Area of triangle = 
Where b is the base
and h is the height
Area of square = 
Where
is the length of a side
In the diagram,


∴ Area of figure B = 
∴ Area of figure B = (15×6) + 225
∴ Area of figure B = 90 + 225
∴ Area of figure B = 315 ft²
Hence, the area of figure B is 315 ft²
Learn more on Calculating area here: brainly.com/question/23990217
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Point C
Explanation: honestly I’m just giving a wild guess so sorry if it’s wrong