Area = (side)^2
Area = (20cm)^2
Area = 400cm^2 = the area of one square.
Let T = total area
T = 10(Area)
T = 10(400cm^2)
T = 4,000cm^2
Done.
Given:
and 
.
To find:
The combinations without repetition are possible if and .
Solution:
Combination of selecting r item from total n items is:
We have and . By using the above formula, we get
Therefore, the correct option is D.
Tyrell is correct.. If you round it, it is 750. 5 or more up the score, 4 or less let it rest.
So to start this off, we need to find the area of the playground. We can simply multiply 150*2 and 50*2, and we get 300 and 100. Add those together and we get 400m.
Now, we can identify the number of laps it takes. But first, we have to convert kilometers into meters. there are 1000 meters in 1 km, so we will use 1000 to find the answer
Now, we can do 1000/400 to find the answer, which is 2.5
Therefore, it will take Kerry 2.5 laps to skate around the entire park
Answer: 2.5 laps
Hope this helped!!! :D
