Program to calculate the area and perimeter of rectangle and area

and circumference of circle.

##### calculate the area and perimeter of rectangle and area

and circumference of circle.

we know the rectangle area=l*b

perimeter= 2(l+b)

circle 2*pi*r and pi*r*r

###### let’s begin

```
#!/bin/bash
(bash copy)
read -p "Enter radius of circle: " radius
read -p "Enter length of rectangle: " length
read -p "Enter breadth of rectangle: " breadth
pi=`seq -f '4/%g' 1 2 99999 | paste -sd-+ | sed "s/^/;scale=5;/g"| bc -l`
cir_area=`bc <<< "scale=2;$pi*$radius*$radius"`
cir_peri=`bc <<< "scale=2;2*$pi*$radius"`
rect_area=`bc <<< "scale=2;$length*$breadth"`
rect_peri=`bc <<< "scale=2;2*($length+$breadth)"`
echo "Area of the circle: " $cir_area
echo "Perimeter of the circle: " $cir_peri
echo "Area of rectangle: " $rect_area
echo "Perimeter of rectangle: " $rect_peri
```