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serious [3.7K]
3 years ago
7

Find the area of this circle. Use 3 for . A = tar2 4 cm [?] cm2

Mathematics
2 answers:
neonofarm [45]3 years ago
5 0
4 x 4 = 16
16 x 3 = 48
48 cm^2
ivanzaharov [21]3 years ago
5 0

Answer:

48 is the area

Step-by-step explanation:

A=4squared=16x3=48

Pi is 3.14 but in the question it states just a 3.

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2 years ago
The quantity y varies directly with the square of x and inversely with z. When x is 9 and z is 27, y is 6. What is the constant
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\bf \qquad \qquad \textit{double proportional variation}
\\\\
\begin{array}{llll}
\textit{\underline{y} varies directly with \underline{x}}\\
\textit{and inversely with \underline{z}}
\end{array}\implies y=\cfrac{kx}{z}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------

\bf \stackrel{\textit{\underline{y} varies directly with the square of \underline{x} and inversely with \underline{z}}}{y=\cfrac{kx^2}{z}}
\\\\\\
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3 years ago
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