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vieraml58
05.01.2020 •
Mathematics
The figure is made up of two shapes, a semicircle and a square.
what is the exact perimeter of the figure?
4π+16 cm
4π+12 cm
2π+6 cm
2π+12 cm
square with 2 sides labeled 4cm. a semicircle adjoins the left side of the square. inside lines are dashed
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Ответ:
Step-by-step explanation:
The perimeter of a square is P = 4s where s is the side length. The perimeter of the square is P = 4*4 = 16 cm. However, one side is covered by a semi circle and its length of 4 cm is not a part of the perimeter. So it is 16 - 4 = 12. The perimeter of the square s 12.
To find the perimeter of a semi-circle use the circumference formula. The circumference is
. However, since a semi circle is half a circle then the circumference is
. Since the semi-circle adjoins the square, its diameter is the side length of the square 4cm.
So the total perimeter is![4\pi + 12](/tpl/images/0443/5865/2dc88.png)
Ответ: