A soccer balls outer covering is made by stitching together 12 regular pentagons and 20 regular hexagons both regular polygons h
ave a side length of 4cm. The pentagons have an apothem of 3.06cm. To the nearest whole number what is the total surface area of the soccer ball
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Given:
Point (7,12) is rotated 1260° counterclockwise about the origin.
To find:
The x-coordinate of the point after this rotation.
Solution:
If a point is rotated 360 degrees then its coordinates remains unchanged.
If a point is rotated 180 counterclockwise about the origin degrees, then
We know that,
After rotation the coordinates of points remains same, i.e., (7,12). So, after that (7,12) is rotated 180° counterclockwise about the origin.
The point (7,12) becomes (-7,-12) after rotation of 1260° counterclockwise about the origin.
Therefore, the x-coordinate of the required point is -7.