What is 15.40 rounded off to the nearest whole number

The simple answer is 15. It is 15 because the number after the point is lower than 5. For example, if the number in question was 71.70, the rounded nearest whole number would be 72 because the number after the point ‘7’ is greater than or equal to 5. This automatically rounds the number in front up one. Hope this helps!

a) 32pie square meters

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.