Answer:

Step-by-step explanation:
Diameter of the circle=

Circumference of a circle:


Area of the circle:


Answer:
C)
Step-by-step explanation:
If you divide 8:2 by two you get 4:1 which is the equivilant ratio.
Hope this helps.
Answer:
y = 4 ; x = 4√2
Step-by-step explanation:
This is a 45° 45° 90° triangle meaning the legs will equal each other and the hypotenuse will be equal to the length of the legs times √2.
Answer:
14
Step-by-step explanation:
5x-7=3x+21
2x=28
x=14