Page 160 - Maths Class 04
P. 160

2.  Find the missing length.

                 a.          3 cm                 b.                                         c.
                                                                                                          4 cm


                   6 cm                 ?           3 cm                6 cm                   8 cm              6 cm




                                                                     ?
                            6 cm                                                                            ?
                    Perimeter 20 cm                         Perimeter 18 cm                       Perimeter 30 cm


            3.  Find the perimeter of these shapes. Take each square to have sides of 1 cm.




                               a.                               b.                          c.




















            Area


            Look at these squares.












                                       Small square






                                                                  Big square

                                                                                               Bigger square


            If we count the squares, we have  4   squares in the first figure,  9  squares in

            the second figure and  16  squares in the third figure. That is, the area of the




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