Question

the perimeter of a parallelogram are 28 cm and 30 cm if the adjacent side of a parallelogram are 26 cm find the area of parallelogram
​

Answer 1

Answer:

672

Step-by-step explanation:

draw th fig from the information given in question

given

ab=28cm, ad=26, bd=30 cm

now,semi-perimeter (s) of triangle abd=

                                                      =

                                                      =42 cm

accordind to heron's formula area of triangle =

where s=semi-perimeter of triangle

      a,b,c =sides of triangle

    area of traingle abd=

=

=336

hence area of parallelogram abcd =

=

=672