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nila49
06.05.2021 •
Mathematics
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by using the prime factorisation method
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Ответ:
The area of semicircle is 537.82 cm².
Step-by-step explanation:
Given :
Diameter of semicircle = 37 cm.To Find :
Area of semicircleUsing Formula :
![{\star{\small{\underline{\boxed{\sf{\red{R = \dfrac{D}{2}}}}}}}}](/tpl/images/2608/3304/f1541.png)
R = Radius D = Diameter![{\star{\small{\underline{\boxed{\sf{\red{Area = \dfrac{1}{2}\pi{r}^{2}}}}}}}}](/tpl/images/2608/3304/41d6b.png)
π = 22/7r = radiusSolution :
Here we have given that the diameter of semicircle. So, finding the radius of semicircle by substituting the values in the formula :
Hence, the radius of semicircle is 18.5 cm.
Now, we know the radius of semicircle. Then, finding the area of semicircle by substituting the values in the formula :
Hence, the area of semicircle is 537.82 cm².