What's the volume of a right pyramid whose base is a square with a side 6m long and whose altitude is equal to the base side?
a. 72m^3
b. 216m^3
c. 36mm^3
d. 108m^3
i'm giving u 20 points an mark as the brainliest

d? maybe

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.