Answer:
20
Step-by-step explanation:
The formula for circumference is 2
r, where r stands for radius. Therefore, the circumference of this circle can be defined by:
2
r
2
10
20
Hope this helps :) Please contact me if you have any questions!
Answer: See below
Step-by-step explanation:
Same steps as the last question I answered
5) a ➤ x=-3
b ➤ y=7
6) x=-1
7) y=-4
Because the two angles on the right add to 180 degrees, we can create this system:

We can also prove that

, which, when solved, shows that

.
When plugged in to the original equation, we find that y = 105 degrees.
Answer:
I believe its 57.
Step-by-step explanation:
180-66=57.
57+57+66=180
I would say the cube because it takes more space (volume) than the row of cubes
"Not sure if it makes sense but, eh...."