23870 divides by 38 is 628 remains 4
Scientific notation is used when a number is really big (example: 11200000000) or really small (example: .000000000002). In this case three of your situations would have really big numbers. That means the answer would be the speed of a car because that would a normal sized number.
Not sure what the length of the rectangle is but to find perimeter of a rectangle you can use the following formula
2w+2l= perimeter
The reason we multiply both the length and width by two is because there are two ends of the width and two ends of the length.
The other formula that would also work is as follows
w+w+l+l= perimeter
Hope it helps
