Answer:
C ≈ 54
Step-by-step explanation:
The circumference (C) is calculated as
C = πd ( d is the diameter )
Here d = 18 , then
C = π × 18 ≈ 3 × 18 = 54
Answer:
There were written records by studying aircrafts before historians know about the past.
Step-by-step explanation:
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Total area = 12 + 18 = 30cm²
Answer:
669 is the answer to this equation
Step-by-step explanation:
brainliest?
8x + y = -16 ;
3x - y = 5 ;
____________(+)
11x = -11;
x = - 11 / 11 ;
x = - 1;
y = -5 + 3 * ( - 1 ) = - 8.
