Answer:
Explanation:
19.
P = 2(x - 3 + 7x + 1)
= 2(8x - 2)
= 16x - 4
20.
P = 3y + 5 + y - 4 + 6y
= 10y + 1
Answer:
Option B is correct
circumference of a circle is 785 m
Step-by-step explanation:
Circumference of the circle(C) is given by:

where
r is the radius of the circle
As per the statement:
radius of the circle is 125 m
then substitute in [1] we have

Simplify:
C = 785 m
Therefore, the circumference of a circle is 785 m