Shell program to calculate the area and circumference of the circle given the radius.

# circleare.sh

# Program :          To calculate the area and circumference of the circle given the

                             radius.

# Author :          sujith

# Date :              16/03/2015

clear

echo "Enter the radious of the circle"

read r

area=$(echo "3.14*$r*$r" | bc  )

circum=$(echo "3.14*2*$r" | bc)

echo "area of the circle is             " $area

echo "circumference of the circle is    " $circum

OUTPUT:

[141740@localhost ~]$ sh circlearea.sh

Enter the radius of the circle

3.5

area of the circle is            38.46

circumference of the circle is   21.98