Atoy chest in the shape of a rectangular prism has a volume of 8,640 cubic inches. the base area of the toy chest is 720 square inches. what is the height of the toy chest?

12 inches

Step-by-step explanation:

We know that the volume of a rectangular prism is given by :-

Given :  A toy chest in the shape of a rectangular prism has a volume of 8,640 cubic inches.

The base area of the toy chest is 720 square inches.  

Let h be the height of the toy chest, then we have

Hence, the height of the toy chest = 12 inches

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.