Question

In a parallelogram measure of adjacent sides are 34cm and 20cm . One of the diagonals is 42cm. Find the area of the
parallelogram..... Hurry up pleaseeeeeeee

Answer 1

Answer:

first,

Semi perimeter of triangle made by parallelogram by one diagonal (S)=

(20+34+42)/2

=48

a=48-20=28

b=48-34=14

c=48-42=6

area of triangle =

$\sqrt{s \times a \times b \times c}$

=336cm square

now, area of parallelogram =2*area of

triangle

= 2*336

= 672cm square