circumference of a circle=2πr
area=πr²
1) we calculate the radius of this circle.
Data:
area=9π m²
area=πr²
9π m²=πr²
r²=9π m² / π
r²=9 m²
r=√(9 m²)=3 m
2) we calculate the circumference:
circumference=2πr=2π(3 m)=6π m
Answer: the circumference is 6π m
Answer:
300 calories
Explanation:
- perimeter of circle : 2 π r
Here radius:
perimeter of track = 2 π r = 2 (3.14) (75) = 471 ft
total laps ran:
So calories burnt:
Answer:
3x - 23 = 28
Step-by-step explanation:
Answer:
$381.25
Step-by-step explanation:
15.25*25=381.25