I need help finding the answers. Idk how to do it. If I did then I could find it. Help plz
1 answer:
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Answer:
1056.25π square units
Step-by-step explanation:
A few formulas an definitions which will help us:
(1) , where c is the circumference of a circle and d is its diameter
(2) , where A is the area of a circle with radius r. To put it in terms of d, remember that a circle's diameter is simply twice its radius, or mathematically, (3)
.
We can rearrange equation (1) to put d in terms of π and c, giving us (4) , and we can make a few substitutions in (2) using (3) and (4) to get use the area in terms of the circumference and π:
We can now substitute c for our circumference, 65, to get our answer in terms of π:
The solution to the equation is and
Explanation:
Given that the equation is
We need to determine the solution of the equation.
The solution of the equation can be determined using the quadratic formula.
The quadratic formula is given by
Hence, from the equation, we have,
Substituting these values in the quadratic formula, we get,
Simplifying, we get,
Simplifying the terms within the root, we get,
Thus, the roots of the equation are and
Taking out the negative sign, we get,
and
Cancelling the negative sign, we get,
and
Thus, the solutions of the equation are and