Kelsey drew a rectangle with the same area as the square. the length of kelsey's rectangle is 8 inches. what is the perimeter in inches of kelsey's rectangle

perimeter of Keyley's rectangle  is 20 inches.

Step-by-step explanation:

Given : Keyle drew the rectangle 'R' and square 'S' with equal areas.The length of Kelsey's rectangle is 8 inches.

Find:   What is the perimeter in inches of Kelsey's rectangle.

Solution:

Length of Keyley's rectangle  = 8 inches.

Let the breadth be 'b' inches. Again, let 'l' be the length of a side of square .

Area of rectangle = area of square

length * width =  length *length

8 * width =

Now, the only possible value of b is 2, so that

Area of square ( )= 16

Plugging the values of = 16 in 8 * width =

8 * width =16

Width = 2

Perimeter of rectangle = 2 ( length + width)

Perimeter = 2 ( 8 + 2 )

Perimeter = 20 inches

Therefore, perimeter of Keyley's rectangle  is 20 inches.

4 puzzles in 3 hours

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.