+26400 (A); s= d/t (t)
and
(B): A=\pi r2 (r)
(A):
\(\begin{array}{rcll} s &=& \dfrac{d}{t} \qquad &| \qquad \cdot t \\ s\cdot t &=& d \qquad &| \qquad :s \\ t &=& \dfrac{d}{s} \\ \end{array}\)
(B):
\(\begin{array}{rcll} A &= &\pi r^2 \\ \pi r^2 &= & A \qquad &| \qquad :\pi \\ r^2 &= & \dfrac{A}{\pi} \qquad &| \qquad \sqrt{} \\ r &= & \sqrt{\dfrac{A}{\pi}} \\ \end{array}\)
+26400 (A); s= d/t (t)
and
(B): A=\pi r2 (r)
(A):
\(\begin{array}{rcll} s &=& \dfrac{d}{t} \qquad &| \qquad \cdot t \\ s\cdot t &=& d \qquad &| \qquad :s \\ t &=& \dfrac{d}{s} \\ \end{array}\)
(B):
\(\begin{array}{rcll} A &= &\pi r^2 \\ \pi r^2 &= & A \qquad &| \qquad :\pi \\ r^2 &= & \dfrac{A}{\pi} \qquad &| \qquad \sqrt{} \\ r &= & \sqrt{\dfrac{A}{\pi}} \\ \end{array}\)
