Acircle has circumference 28.26 cm. what is the area of the circle? use 3.14 for pi

Me find the value of x each figure.

Can someone me with these two circle theorem questions asap?

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true