HEP WILLGIVE 50 POINTS!A square is inscribed in a circle. If the area of the square is 9 in^2, what is the ratio of the circumference of the circle to the are of the circle?

Step-by-step explanation:

Area of the square is 9 in², so side of the square is:

The diagonal of the square is the diameter of the circle.

Circumference of circle:

Area of circle:

Ratio of circumference to area:

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.

the correct answers i think are b. and d.

give me brainliest if it is correct!