Question

abcd is a parallelogram if ab is 4.5 cm and perimeter 21cm then find the sides of a parallelogram ​

Answer 1

Answer:

Step-by-step explanation:

PERIMETER OF LLGM = a + b + c + d

                          21cm  = a + a + c + c [opposite sides are equal]

                           21cm = 4.5 cm + 4.5 cm + 2c

                          21 cm = 9 cm + 2c

            21 cm - 9 cm   =  2c

                        12 cm   = 2c

                       12 cm/2 = c

                            6 cm = c

there for the sides of the parallelogram are 4.5 cm , 4.5 cm , 6 cm and 6cm

CHECK:-

PERIMETER = a + b + c + d

                    = 4.5 cm + 4.5 cm + 6 cm + 6 cm

                    =  9 cm + 12 cm

                    = 21 cm

therefore the answer is correct

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