First street and constitution boulevard run perpendicularly. the city commission wants to construct a new street that diagonally connects first and constitution 4 miles and 9 miles, respectively, from their intersection. the construction cost is estimated at $120 per linear foot. find the estimated cost for constructing the street.

a. $6,280,000

b. $52,000

c. $634,000

d. $6,240,000

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.