Since the formula for circumference is pi*diameter, you multiply 3.14 by 622 mm to get 1953.08 mm as your circumference.
Personally you can’t measure you have to be in person but just double it on a piece of paper and you’ll find it out
Answer:
-390 mph
Step-by-step explanation:
Let a and b represent, respectively, the distances of A and B from the airport. The distance d between the planes is then given by the Pythagorean theorem as ...
d² = a² + b²
Differentiating with respect to time, we have ...
2d·d' = 2a·a' +2b·b'
Solving for d', we get ...
d' = (a/d)a' +(b/d)b'
The value of d at the time of interest is ...
d = √(a² +b²) = √(30² +40²) = √2500 = 50
Then the rate of change of separation is ...
d' = (30/50)(-250 mph) +(40/50)(-300 mph) = (-150 -240) mph
d' = -390 mph
The distance between planes is decreasing at 390 miles per hour.
Answer:
30 feet
Step-by-step explanation:
Hello!
Half an hour is 30 minutes, so that means we are asked to find h(30).
Solve for h(30):
- h(30) = 150 - 4(30)
Substitute 30 for t - h(30) = 150 - 120 Simplify
- h(30) = 30
The person would be 30 feet above the ground in half an hour.
You get it by cross multiplication
10×9÷3=30 and if you want to check
30 over 9 =3.333
10 over 3 = 3.333
