Why is water often used as the main ingredient in cosmetics?

Water forms the basis of almost every type of cosmetic product, including creams, lotions, makeup, deodorants, shampoos and conditioners. Water plays an important part in the process, often acting as a solvent to dissolve other ingredients and forming emulsions for consistency.

Explanation:

Water forms the basis of almost every type of cosmetic product, including creams, lotions, makeup, deodorants, shampoos and conditioners. Water plays an important part in the process, often acting as a solvent to dissolve other ingredients and forming emulsions for consistency.

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 .