Answer:

Step-by-step explanation:
The inequality sign must be changed when it is multiplied/divided by a negative number
The surface area will be 210 square meters. Hope it help!
There are 2pi radians in a circle
so the fraciton is Θ/(2pi)
so
pir^2 times Θ/(2pi)=pir^2Θ/2pi=Θr^2/2
multiply it by Θ/(2pi)
The answer is 4.5 × 10 -8
53% I believe I'm OK in math