Which of the following describes electron sharing between two oxygen atoms.
a)each oxygen shares 6 electrons with the other
b)each oxygen shares 2 electrons with the other
c)each oxygen shares 8 electrons with the other
d)each oxygen shares 1 electrons with the other

The area of parallelogram can be found by product of its base and height. The calculations are shown below:  

Explanation:

We know that,

Area of parallelogram = base × height

assume base to be 21 cm.

Then,

                 sin 79° =  

             ∴ height = 13 × 0.98 = 12.74

Area of parallelogram = 21 × 12.74

                                    = 267.54

The area of parallelogram is calculated as 267.54 .