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15.10.2019 •
Mathematics
How is the area of a semicircle found?
a.take half the area of the whole circle.
b.use the area formula with r/2.
c.take half of the circumference.
d.divide the area of the whole circle by 4.
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Ответ:
(A) Take half the area of the whole circle.
Step-by-step explanation:
A semi-circle is half of a circle, thus the area of circle is given by:'
Area of circle=
, where r is the radius of the circle.
Since, A semi-circle is half of a circle, therefore area of the semi circle is also half of the circle, therefore
Area of semi circle=![\frac{{\pi}r^{2}}{2}](/tpl/images/0321/8394/e922a.png)
Thus, the area of the semi circle can be found by taking half the area of the whole circle.
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