Answer:
314
Step-by-step explanation:
the formula to get the area of a circle is
pi=3.14 and r=10
do you get 3.14 x 
3.14 x 100
314
Answer:
81 pi centimeters squared
Step-by-step explanation:
Area of circle = πr²
18/2 = 9
π9²
π(9 x 9)
π81
Answer:
8,9
Step-by-step explanation:
(x +1) + 7=2x
x+8 = 2x
8=x