On his diet, John's weight dropped from 200 to 178 pounds. What was the percent of decrease in his weight ?
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Answer:
Step-by-step explanation:
A rectangle is inscribed in a circle of radius r.
Radius of the circle is 'r' . the diameter of circle is 2 times radius is 2r
The diameter of the circle becomes the diagonal of the rectangle.
The one part of the rectangle forms a triangle with hypotenuse 2r
Triangle is a special 30:60:90 degree angle
the ratio of the special triangle is
Hypotenuse is '2r' , so the ratio becomes
So the width of the rectangle is 'r' and length of the rectangle is
Perimeter = 2 times length + 2 times width
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