Answer:

Step-by-step explanation:

Answer:
225
Step-by-step explanation:
3240k = 2×2×2×3×3×3×3×5×k
Every factor should be in groups of 3
(3×5)² = k
k = 225
Answer:
Distance around the circle is perimeter.
Perimeter = radius * 2 * π = diameter * π
Step-by-step explanation:
π = constant =3.14
Answer:
The answer is A 21
Step-by-step explanation:
Answer:
x=145°
Step-by-step explanation:
180 = 35 + x
x = 180-35
x= 145°