Question

find area of parallelogram whose adjacent sides are 10cm and 12 cm with diagonal 14cm

Answer 1

This is pretty easy.
I hope you have some idea bout HERON'S FORMULA. Given 3 sides of a triangle, the area will be
A= √(s)(s-a)(s-b)(s-c)
Where s is semi(half) the perimeter.
Here we have s=a+b+c/2 =18cm.
Put back in the formula
√18(18-14)(18-12)(18-10)
=√18*4*6*8
=24√6 cm^2.
This is half the area of the parallelogram.
A*2 will give full area.
Thus answer is 48√6 cm^2.
To have a better understanding, here's the supplement question you can try.
A parallelogram has sides 30m and 14m and one of its diagonals is 40m long. Then its area is?
Cheers. Mark brainliest.

Answer 2

This is pretty easy.

I hope you have some idea bout HERON'S FORMULA. Given 3 sides of a triangle, the area will be

A= √(s)(s-a)(s-b)(s-c)

Where s is semi(half) the perimeter.

Here we have s=a+b+c/2 =18cm.

Put back in the formula

√18(18-14)(18-12)(18-10)

=√18*4*6*8

=24√6 cm^2.

This is half the area of the parallelogram.

A*2 will give full area.

Thus answer is 48√6 cm^2.

To have a better understanding, here's the supplement question you can try.

A parallelogram has sides 30m and 14m and one of its diagonals is 40m long. Then its area is?

Cheers. Mark brainliest.