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1 answer:
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Answer:
Option C is correct
Conversion factor is used : 60 seconds / 1 minutes
Step-by-step explanation:
Given: Speed = 20.1 meters per second
To convert this speed in meters per minute.
Conversion Factor is the relationships between units to convert from one unit to another unit.
Use conversion: 1 minute= 60 second
speed =
Now, multiply the speed in meter/seconds with 60 seconds and you will get the speed in meters/minute.
i.e,
speed =
Therefore, the conversion factor is used : 60 seconds / 1 minutes
Answer:
Circumference ≈ 3.142 cm
Step-by-step explanation:
≈ basically means that it's an approximate value.
The formula to find the circumference of a circle is:
Circumference = 2πr
The diameter is given, but we can find the radius by halving the diameter.
radius = =
= 0.5 cm
Now that we know the radius, we can add the radius into the formula and find the circumference.
Circumference = 2 × π × 0.5
Circumference = π × 1
Circumference ≈ 3.142 cm