By definition, the number
is the ratio between the circumference and the diameter:

This implies that

And so your circumference is 
Answer:
Step-by-step explanation:
x²+10x+21=0
x²+10x+(10/2)²-(10/2)²+21=0
x²+10x+25-25+21=0
(x+5)²-4=0
(x+5)²=4
(x+y)²=(x+y)(x+y)=x(x+y)+y(x+y)=x²+xy+xy+y²=x²+2xy+y²
(x+y)²=x²+2xy+y²
coefficient of x=2y
y²=[(coefficient of x)/2]²=(2y/2)²=y²
9514 1404 393
Answer:
F HL
Step-by-step explanation:
No right angle is shown, so the HL theorem cannot be used.
Answer:which grade are you
Step-by-step explanation:
If you are grade 7 to 9 I know