Extramarks offer online study material based on CBSE for all class 8.Which is very useful for the students to study well and to score good marks in the exams.They provide online study materials which are based on the CBSE pattern. When a number is multiplied by itself, then the product is the square of the number. To know more visit https://www.extramarks.com/ncert-solutions/cbse-class-8/mathematics-squares-and-square-roots