Question

please answer by solving please​

Answer 1

Step-by-step explanation:

Hello mate

3*18 will be correct

Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

hope it helps you ☺️

Answer 2

Step-by-step explanation:

Given :-

A regular polygon has 18 sides

To find:-

i) Find the measure of its exterior angle ?

ii) Find the number of its diagonals ?

Solution :-

Given that :

The number of sides in a regular polygon (n) = 18

We know that

The measure of each exterior angle of a regular polygon of 'n' sides is 360°/n

Each exterior angle of the given regular polygon of 18 sides

=> 360°/18

=> 20°

The measure of the exterior angle = 20°

and

We know that

The number of diagonals of a regular polygon of'n'sides is n(n-3)/2

On Substituting the value of n in the above formula then

=> (18)(18-3)/2

=> 18×15/2

=> 9×15

=> 135

The number of diagonlos = 135

Answer:-

I) The measure of the exterior angle of the given regular polygon = 20°

ii) The number of diagonals of the given regular polygon = 135

Used formulae:-

• The measure of each exterior angle of a regular polygon of 'n' sides is 360°/n
• The number of diagonals of a regular polygon of'n'sides is n(n-3)/2
• n = Number of sides in the given regular polygon