Find the area of the regular decagon with a side measure of 4 cm. give the answer to the nearest tenth.  question 28 options: 129.4 cm2 246.2 cm2 123.1 cm2 139.8 cm2 save

C.

Step-by-step explanation:

We have been given that each side of a regular hexagon measures 4 cm. We are asked to find the area of our given hexagon.

We will use surface area of hexagon formula to solve our given problem.

Therefore, the area of our given hexagon is 123.1 squared cm and option C is the correct choice.

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.