Step 1
Find the area of one equilateral triangle
Applying the law of sines

in this problem
a=b=7 cm
C=60 degrees
so

cm²
Step 2
To calculate the area of the hexagon multiply the area of one equilateral triangle by 
cm²
therefore
the answer is the option
73.5 sqrt 3cm²
Answer:
A, D, E
Step-by-step explanation:
Just add to find X
20 + 60 = 80
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X = 80
To make sure plug it in
80 - 60 = 20
The equation is true
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x = 80 is your answer
Answer:
<h2>Option B is the right answer.</h2>
Step-by-step explanation:
are two irrational numbers, that is, they can not be shown as the fraction of two integers.

is also a irrational number, since it also can not be represented as the fraction of integers.
Hence, the given expression represent the product of two irrational number and is equivalent to an irrational number.
128 = 128 cause u add them