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...Mensuration and unit coordinate geometry structure introduction objectives measurement of perimeter area rectangle square triangle circumference the circle trapezium quadrilateral polygon surface cuboid cube cylinder cone sphere volume basics use distance formula section let us sum up end activities answers to check your progress references suggested readings children are familiar with objects like notebook pencil lunch box writing table bench desk so on when think such generally shape comes their mind in addition grown ups about boundaries space covered etc case mentioned each these is form certain geometrical figures i e mathematics study shapes occupies a prominent role as it has relevance construction building houses bridges play grounds while constructing new home size matters same experienced arrange desks classroom situations we do take measurements plan executed accordingly concerning measuring various dimensions termed first this will discuss concepts then try explore deductiv...