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Jaylen52709
20.06.2020 •
Mathematics
9. What is the area of the region left if three equilateral triangles are cut off from a semi circle of radius 4cm? *
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Ответ:
Step-by-step explanation:
For the equilateral triangle in a semicircle of radius 4cm.
Side Lengths =4cm
Angles =60 degrees
Therefore, the area of one equilateral triangle
Area of the three equilateral triangle
Area of the semicircle
Therefore, the area left over =Area of Semicircle -Area of Triangles
=25.1327-20.7846
=![4.35$ cm^2](/tpl/images/0690/8134/78522.png)
Ответ: