Answer:
<u>14t</u>
Step-by-step explanation:
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<span>This is the term used to describe economic systems in which the basic economic questions are answered based on a socially, pre-established way.</span>
The given expression for the area, 81x² - 4y², is a difference of two squares. The first term is the square of 9x and the second term is the square of 2y. The factors of this difference and the therefore the dimensions of the rectangle are, 9x - 2y and 9x + 2y.
That is a 30 60 90 triangle
The "short" side (DE) equals the middle side (FE) times (1 / sq rt(3))
short side = 8 * sqrt(3) * (1 / sq rt(3) = 8
Hypotenuse (DF) is 2 times the short side which equals 16.
Source:
http://www.1728.org/trig2.htm
Answer:
area 12.566
circumference 12.566
Step-by-step explanation:
