The answer to your questions would be “46 degrees” :) you’re welcome
I think it’s 3 I’m not sure
15:3 is the only equivalent ratio to 20:4.
The square root of 100 is 10
Area=pi times radius^2 so
if area=4pi=pi times r^2
4 times pi=r^2 times pi
divide both sdies by pi
4=r^2
square root
2=radius since legnth cannot be negative
radius=1/2 diamters
2 radius=diameter
2(2)=diameter=4
diameter=4
