Answer:
Answer is the 72.02 cm³ .I hope it's helpful to you.
<span>4x+7x+19=3 x 12 - 4+(5 x 16) - 5 </span><span>
7x+3-2x=4x+2 x 5 + 1
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Im assuming you meant the 9th term and thats 47
The equation of any given circle is:

where (h, k) is the center and r is the radius.
In the problem, we are given the center, and the radius. When we plug them in:

we got the formula of the circle.
since 3/4 or 75% ARE black, 1/4 will not be black. 1/4=.25 which is 25%.