The answer is c because all you are doing here is subbing the variable r for 5b.
Answer: 52.7856cm
Step-by-step explanation:
Circumference of a circle = 2πr
Note that radius = Diameter / 2 = 16.8/2 = 8.4cm
Circumference = 2πr
= 2 × 3.142 × 8.4
= 52.7856cm
Therefore, the circumference of the circle is 52.7856cm
Step-by-step explanation:
r - 18 = 27
r = 27 + 18
r = 45
...
Answer:
1. 142. 2. adjacent angles.
Step-by-step explanation:
1. because it is less then 180, that would be flat, and it is bigger then 132.
2. because they are adjacent to each other.
Answer:
49x2−4y2
Step-by-step explanation:
7x(7x)+7x(−2y)+2y(7x)+2y(−2y)
