Question

(2) ABCD is a parallelogram. If ar (ABC) = 42 cm². then find
ar (ABCD).​

Answer 1

Answer:

Hey..

In the figure, let AC be the diagonal of the parallelogram.

We know that diagonal of a parallelogram divides it into two equal area triangles.

so, Ar(ABC)+Ar(ACD)=Ar(ABCD).

Ar(ABCD)=42+42

=84cm sq.

thnk u...

Answer 2

Answer:

Assume that ABC is formed by the diagonal of parallelogram ABCD.

The diagonal of a parallelogram divides it into 2 triangles with equal areas.

Hence, ar(ABCD)=2×ar(ABC)

ar(ABCD)=2×42cm²

ar(ABCD)=84cm²

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