$\bf \textit{area of a circle}\\\\
A=\pi r^2~~
\begin{cases}
r=radius\\
------\\
A=1809.56
\end{cases}\implies 1809.56=\pi r^2
\\\\\\
\cfrac{1809.56}{\pi }=r^2\implies \boxed{\sqrt{\cfrac{1809.56}{\pi }}=r}\\\\
-------------------------------\\\\
\textit{circumference of a circle}\\\\
C=2\pi r\qquad \qquad \implies C=2\pi \left( \boxed{\sqrt{\cfrac{1809.56}{\pi }}} \right)$

5 0

2 years ago

One state lottery has 900 prizes of $1; 145 prizes of $10; 30 prizes of $60; 5 prizes of $325; 2 prizes of $1,110; and 1 prize o

Readme [11.4K]

Answer:

Step-by-step explanation:

The detailed step by step calculation is as shown in the attached file

5 0

2 years ago

Solve (2x + 5)= (2x + 3)(2x - 1)

AlexFokin [52]

$(2x + 5)= (2x + 3)(2x - 1)\\2x+5=4x^2-2x+6x-3\\4x^2-2x+6x-3-2x-5=0\\4x^2+2x-8=0\\(4x+1-\sqrt{33})( 4x+1+\sqrt{33})=0 \\ x=\frac{-1+\sqrt{33} }{4} /or/x=\frac{-1-\sqrt{33} }{4}$

4 0

2 years ago

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What is 89.99 divided by 30%

kirill115 [55]

Answer:

if you are dividing 299.96 If you are multiplying 26.99

Step-by-step explanation:

If you are dividing: Factor the numerator and denominator and cancel the common factors.

If you are multiplying: Simplify the expression.

6 0

2 years ago

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