Each student desk in a classroom has a rectangular desktop that measures 60 cm by 45cm .Some of these desks are arranged ,side by side . Find the least length of a side of the square . AND the number of rows and colums of desk used to form the large square table.
what are some of the harmful and negetive effects of the pencils?
how does a pencil work?
How does pencil benifit mankind and the enviroment?