Answer:
.44444444
Step-by-step explanation:
πr²=full circumference
18/π(9)²=x/2π
3. How many faces do each of the following have?
Hope this helps!
C, D, and E
x = 7
40x ÷ 10 = 28
40x ÷ 10 × 10 = 28 × 10
40x = 280
40x ÷ 40 = 280 ÷ 40