Question

the figure below is made of a square and half - circles. you found the area of a half circle is 50\\(\pi\\). find the area of all of the half circles in the figure. area of one half circle = \\(\frac{1}{2}\picdot10^{2}=50\pi\\). the area of the half circles in the figure is square ft. 150\\(\pi\\) 200\\(\pi\\) 100\\(\pi\\)

Explanation:

Step1: Count half - circles

There are 2 half - circles in the figure.

Step2: Calculate total area

Since area of one half - circle is $50\pi$, total area is $2\times50\pi$.
$2\times50\pi=100\pi$

Answer:

$100\pi$ square ft.