Question

it
14) The
The length of the Adjacent sides of a
arall deguam is bloom and 20 cm
One diagonals is 20 cm. find its Area :​

Answer 1

Answer:

area of abcd=672cm²

Step-by-step explanation:

let abcd is a parallelogram

ad=34

dc=20

and ac=42

in Δadc

s=34+20+42=48

area of adc=whole in under root(48*14*28*6)

area of adc=336 cm²

now, it is a parallelogram so,

ad=bc=34

dc=ab=20

ac common=42

so area of cba=336 cm²

adding adc and cba=336+336=672cm²

hene area of abcd=672cm²