Answer:
The circumference of a circle =πd = π×18 =18π m
Answer: (1,1)
Step-by-step explanation:
Answer:
IM TERRIBLE IN GEOMETRY
Step-by-step explanation:
Answer:
x = 12
Step-by-step explanation:
Simply it as follows:
1 + 39 = 40
2 + 38 = 40 etc
18 + 22 = 40
19 + 21 = 40
There are 19 of these plus 40 itself . . .therefore 20 of them
20 x 40 = 800
And finally the last number not used, 20
Therefore 800 + 20 = 820
