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SAI International School
                                                       CLASS - IX

               Mathematics

               CHAPTER-12: HERON’S FORMULA
                Worksheet-2



               SUBTOPIC:APPLICATION OF HERON’S FORMULA


               1.     A quadrilateral whose sides are 3cm, 4cm, 4cm, 5cm and one of the                    1
                     diagonals is equal to 5cm as per the below figure. The area of the
                     quadrilateral is:














                     a. 19.17 cm
                                 2
                     b. 15.17 cm
                                 2
                                 2
                     c. 20.17 cm
                     d. 22.17 cm
                                 2
               2.    State True or False.                                                                  1

                     The base and the corresponding altitude of a parallelogram are 10 cm and
                                                                                     2
                     3.5 cm, respectively. The area of the parallelogram is 30 cm .
               3.  The diagonals of a rhombus are 15 cm and 36 cm long. Find its perimeter.                1

                  S



               4.     One side of a parallelogram is 18 cm long and its area is 153      . Find the        1
                                                                                         2
                      distance of the given side from its opposite side.
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