The length and breadth of a rectangle and radius of a circle are input #through the Keyboard. Write a program to calculate the area and perimeter of the rectangle.
echo "Input length of a rectangle" read length echo "Input breadth of a rectangle " read breadth echo "Input radius of a circle " read radius area=`echo $length \* $breadth | bc` perimeter=` echo 2 \* $length \* $breadth | bc` echo "Area of the rectangle : $area" echo "Perimeter of the rectangle : $perimeter"