The area of this circle is 42π m². what is the area of a 60º sector of this circle? 6π m² 7π m² 14π m² 21π m²

Using proportions, it is found that the area of a 60º sector of this circle is of m².

The rule of three is:

360º - m²

60º - x m²

Applying cross multiplication:

The area of a 60º sector of this circle is of m².

To learn more about proportions, you can take a look at link

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.