AIM: Approximate weight of a cow

 Requirements:   cow, measuring tape

 Procedure: 1.  from the front leg  bone to the last leg bone measure the distance

2.  then measure the chest circumference with measuring tape

 Info:  formula for calculating cow weight =  (chest circumference)^2 *  length / 666

 Note:  the reading should be in inches

 in our case chest width 72 inch  and length was 52 inch so the approximate weight was 404 kg