The statements that aer true or not or whatever
hmm, let's try te sencnarios
remember the commutative property of multiplication
ab=ba
so
what if they are both negative?
well, the negatives would cancel to leave with positive
the oposite would be both positive resulting in a positive
if they are differnt signs then result is negative
oposite would be still different signs so still negative
true statment
We need more context to answer your question
C=2r
divide both sides by 2
c/2=r
c=2pir
divide by 2pi
c/(2pi)=r
