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    E:\Working\Orange_Education\TouchPad_Maths_4\Open_Files\Chap_10\Chap_10
                 \ 10-Nov-2025  Bharat Arora   Proof-8                                     Reader’s Sign _______________________ Date __________

                    3.  What are the area and perimeter of the following shapes? (each square = 1 sq. cm)

                     a.                              P = _______               b.                 P = _______
                                                     A = _______
                                                                                                  A = _______

                                                              d.
                            c.
                                           P = _______                       P = _______
                                           A = _______                       A = _______

                    4.  Use the square grid to draw two shapes with a perimeter of 12 cm but with different
                        areas.

                  5.  Mayank is decorating the bulletin board in the school. The
                        bulletin board is a rectangle measuring 5 m by 3 m. He wants            3 m
                        to add a black border around the entire bulletin board. What
                        is the length of the border that he needs?                                         5 m

                                                                                              Mental Maths

                                                                                                      21 st
                Choose the correct option.                                                           Century   #Critical Thinking
                                                                                                     Skills
                                                                                  5 cm
                    1.  The perimeter of the adjoining figure is:                              2 cm

                        a.  14 cm                b.  20 cm            2 cm
                        c.  16 cm                d.  22 cm                        5 cm          2 cm

                    2. The perimeter of a rectangle whose length and breadth are 13 cm and 5 cm respectively

                        is
                        a.  18 cm                b.  56 cm                c.  36 cm                d.  23 cm

                    3. The length of the boundary wall of a rectangular garden which is 135 m long and 87 m
                        broad is
                        a.  221 m                b.  325 m                c.  444 m                d.  222 m

                    4. The perimeter of a triangle is 47 m and its two sides are 15 m and 16 m. The measure of

                        the third side is
                        a.  14 m                 b.  16 m                 c.  22 m                 d.  24 m

                  5.  The perimeter of a square whose side is 7 cm is

                        a.  28 cm                b.  32 cm                c.  14 cm                d.  21 cm

                       178       Mathematics 4

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