Answer
\begin{equation}
\begin{array}{l}{\text { a) }} \\ {\text { If } y \neq 0 \text { then print value of }(x \div y)} \\ {\text { else }} \\ {\text { print Unable to perform division }}\end{array}
\end{equation}
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\begin{equation}
\begin{array}{l}{\text { b) }} \\ {\text { If }(r \geq 1.0) \text { then print values of }\left(\pi \cdot r^{2}\right) \text { and }(2 \cdot \pi \cdot r)} \\ {\text { else }} \\ {\text { print value of }(2 \cdot \pi \cdot r)}\end{array}
\end{equation}
Work Step by Step
\begin{equation}
\begin{array}{l}{\text { a) }} \\ {\text { If } y \neq 0 \text { then print value of }(x \div y)} \\ {\text { else }} \\ {\text { print Unable to perform division }}\end{array}
\end{equation}
----
\begin{equation}
\begin{array}{l}{\text { b) }} \\ {\text { If }(r \geq 1.0) \text { then print values of }\left(\pi \cdot r^{2}\right) \text { and }(2 \cdot \pi \cdot r)} \\ {\text { else }} \\ {\text { print value of }(2 \cdot \pi \cdot r)}\end{array}
\end{equation}