Answer:
the answer is (4 + 21)(3-51) = (3-51)(4+ 21)
ANSWER
The length of a Diameter is 3.714
EXPLANATION
The circumscribed triangle is shown in the attachment.
We use the cosine ratio to find the altitude of the isosceles triangle.


Altitude =8cos(60°)
Altitude=4cm
Let the upper half of the altitude be y cm.
Then the radius of the circle is (y-4)cm
The upper radius meets the tangent at right angles.
From the smaller right triangle,






y=1.857
The diameter is 2y

=2(1.875)
The length of a Diameter is 3.714
This is the associative property of addition
Answer:
Simplest form - 41/5
Mixed number - 8 1/5
I don't know if you want it like that so...
Step-by-step explanation:
10.2/4=h/12
10.2×12=4×h (cross multiply)
122.4=4h
30.6=h
The ratio is 2.55:1