<u>Given</u>:
Given that the radius of the semicircle is 4 units.
We need to determine the area of the semicircle.
<u>Area of the semicircle:</u>
The area of the semicircle can be determined using the formula,
Substituting π = 3.14 and r = 4, we get;
Simplifying, we get;
Multiplying, we get;
Dividing, we get;
Thus, the area of the semicircle is 25.12 square units.
4x + 2x = < y
This is because the opposite sides (which is 4x and 2x) of a triangle add up to the exterior angle (<y).
We have to find X.
As you know:
because the angles of a triangle add up to 180.
When we add them:
The 9 is multiplying with the X. We want X only and not 9 with it. So, when we take 9 to the other side, it becomes divide. As a result, the answer to x is:-
Substitute value of x into 4x and 2x to find the exterior angle:-
4x:
2x:
When we add them we get the answer for angle Y:-
Therefore, we can conclude that:
