Answer:

Step-by-step explanation:
we know that
The length of a circle is equal to the circumference

where
r is the radius of the circle
In this problem we have

The length of semicircle is equal to

substitute


Answer:
x = 108°
Step-by-step explanation:
x + 2/3 x = 180°
1 2/3x = 180°
5/3 x = 180°
180 * x = 540
540 / 5 = 108
x = 108°
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-Chetan K
30 has Infinite amount of multiples but a few are 60,90,120,150,180,210,240
In simpler terms multiples are what numbers go into
5,486 plus 8,602 is equal to around 14,000, give or take.