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romanna [79]
3 years ago
14

A car drives in a circular path with a diameter of 1200 feet. if the car completes exactly two laps each minute, what is the car

's speed, in feet per second? express your answer to the nearest whole number.
Mathematics
2 answers:
nexus9112 [7]3 years ago
7 0

Answer:

126

Step-by-step explanation:

Each lap is the length of the circumference of the circle, 1200pi feet. The car drives 2400pi feet every 60 seconds, or 2400pi/60 feet per second. Rounded to the nearest whole number, this is 126 feet per second.

Inga [223]3 years ago
6 0
D=rt where d is distance, r is the rate (speed), and t is time. the circumference of the circle is found by 2πr. so the circumference of the circle made by the car is 1200π. Now, we can divide both sides of the equation by our time. It takes 30 seconds for the car to complete one circle since the car does 2 every 60 seconds. this means the speed is 1200π/30 which comes out to 125.66 feet per second. The answer is 126 ft/s.
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We are given the area, so plugging that into our equation looks like this:

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The nearest perfect square less than √105 is √100, and the nearest perfect square greater than √105 is √121.

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8 0
1 year ago
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