6.1.3. Surface of trigonometric figures

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1. phase
Calculate the perimeter and surface of figures.

2. phase
Calculate the surface and of perimeter a circle with radius R, and the squares and equilateral triangles blend in a circle with corners that lie at the edge of the circle.
Calculate the surface of a circle slices belonging to the square and triangle.

3. phase
Mathematical constants, and expressions for the specified task are:

 Surfaces of figures PI = 3.1415927
--------------------
P1 = R2PI
P2 = 2R2
P3 = 2R2sin3(PI / 3)
P4 = (P1 - P2) / 4
P5 = (P1 - P3) / 3
--------------------
O1 = 2RPI
O2 = 42(1 / 2)R
O3 = 6Rsin(PI / 3)

4. phase
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