You have posted 2 separate questions here. Please, next time, separate them with a blank line:
<span>A circle has an area of 81 3.14 units . what is the diameter in terms of 3.14?
I'd prefer you write this as
"</span><span>A circle has an area of 81 pi units . what is the diameter in terms of pi?
Area of a circle = A = pi*r^2. Note that r= diameter / 2. Here, the area is 81 pi square units, or 9^2 * pi square units, which means that the radius is 9 units. The diameter is then 2(9 units) = 18 units.
Your second question, separated from the first, is:
"</span><span>a circle has an area of 81 Pi square units what is the diameter of the circle?"
</span><span>
Use the following formula or formulas: d = 2*r; A = pi*r^2; A = pi*(d/2)^2. Find r first, and then find d.
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According to the question, the equation
is the algebraic equation as well as polynomial equation. Using square root principles, the equation can be re-write.
The factors of the denominator term is not possible and it cannot be simplified. And the simplification is possible with the concept of complex number.
What is polynomial expression?
Polynomial expression are those equation whose highest degree is two. It is also called as quadratic equation. And it is simplified by performing the factors on the given expressions.
To learn more about the polynomial expression from the given link:
<u>brainly.com/question/1280754</u>
#SPJ4
Answer:
2/3 hour or 40 minutes
Step-by-step explanation:
They work at the same speed.
In 1/2 hour, they painted 3 panels.
In 1 hour, they would paint 6 panels.
In 1 hour, Dan would paint 3 panels.
Their individual speed is 3 panels per hour.
2 panels is 2/3 of 3 panels.
It will take 2/3 hour to paint 2 panels.
2/3 hour = 2/3 * 60 minutes = 40 minutes
It won’t let me type my answer I’ll put it and it will say not allowed sorry