Hi there!
We are looking for the circumference of the school field. When we assume that the field is a rectangle, we can use the following formula for finding its circumference.
Circumference = 2 × length + 2 × width
Plug in the length and width from the question.
Circumference = 2 × 50 + 2 × 10
Multiply first (remember: PEMDAS).
Cirxumference = 100 + 20
And finally add.
Circumference = 120.
Hence, the total length of the fence will be 120 meters.
~ Hope this helps you!
There are 
ways of getting exactly 5 heads in 10 tosses. There are 
possible outcomes. So the probability of getting exactly 5 heads is
Answer:
blue and green because parallel means two lines that will never cross
Easy
nPr=
here
36P19=
1045843337171591729971200000
A / B
= 80 / 8
= 10
Therefore the answer is 10
