Answer:
a _ 12×21000/7 = 36000
b _ 33 × 7 / 21000= 11 months
The answer is d you have to divide 54÷3 that equals 18 so you multiply that by 7
Answer: The radius of the track = 0.64 mi
Step-by-step explanation:
Fr circular track , Total distance covered around it = (Number of laps) x (Circumference)
As per given,
32 mi = 8 x (Circumference)
Circumference = 
Also, Circumference =
, where r= radius so,

Put 

Hence, the radius of the track = 0.64 mi