Answer:
m^2 +my-my-y^2
Step-by-step explanation:
just dont simplify
Circumference = 2(pi)r
C = 2*3.14*4.0= 25.12 round 25.10 m
both sides are the same length so 20+6x+3=18+7x+2
all you have to do is get the variables and non-variables on opposite sides of the equation so 3=x
a)45.25
b)657.2