Answer:
Step-by-step explanation:
circumference of a circle = 2πr
where
radius (r) = 18m
π = 3.14
plugin values into the formula
C = 2 (3.14) 18
C = 113.04 m
Take the number of weeks as x
12x = 544 - 100
x =444/12
x = 37
Thus it would take her 37 weeks to buy her a laptop