Question

A parallelogram has sides 30 m and 14 m and one
of its diagonal is 40 m long. Then find its area
​

Answer 1

Answer:

Area is : 336

Answer 2

Answer :

336

Explanation:

let ABCD be the given parallelogram
area of parallelogram ABCD = 2 x (area of triangle ABC)
now a = 30m, b = 14m and c = 40m
s=1/2 x (30+14+40) = 42

Area of triangle ABC = [s(s−a)(s−b)(s−c)]‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√


= [42(12)(28)(2)]‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√
= 168sq m
area of parallelogram ABCD = 2 x 168 = 336 sq m

Hope it’s helpful and you can understand...