1) The area of a circle is given by
where r is the radius of the circle. In this problem, we are told that the area is
so we can rearrange the previous equation to calculate the radius:
And now we can find the circumference, by using the formula:
Therefore, the correct answer is D. 75.3984 meters.
2) The volume of a cube is given by:
where L is the length of the edge. In this problem, L=6 cm, therefore the volume of the cube is
and so, the correct answer is A. 216 cu. cm.
Answer:
True
Explanation:
Physical fitness is defined as the health state of the body and its ability to carry on with the daily occupation as well as sports.
The everyday lifestyle affects this physical fitness, in case you are not used used to "moving" in your daily life, your body will be sort of lazy and lack the power and ability to carry on with the daily occupation as well as sports.
In case your daily lifestyle involved motion, your body will be used to doing activities which will help improve your physical fitness.
Hope this helps :)
Answer:
The answer is first one 1...
Answer:
36 km/h
Explanation:
If d is the total distance, then the time spent driving at 20 km/h is:
t₁ = (d/3) / 20
t₁ = d / 60
And the time spent driving at 60 km/h is:
t₂ = (2d/3) / 60
t₂ = d / 90
So the total time is:
t = t₁ + t₂
t = d/60 + d/90
t = d/36
The average speed is the total distance divided by total time:
s = d / t
s = d / (d/36)
s = 36
The average speed is 36 km/h.
