check the picture below.
so the playground is really just 3 rectangles and one triangle, now the triangle has a base of 8 and a height of 6. We can simply get the area of each figure, sum them up and that's the area of the playground.

Answer:
-8
Step-by-step explanation:
(-2)(-2)(-2)
4(-2)
-8
Answer:
250 mm = 0.25 m
Step-by-step explanation:
(3,-2) it’s where the both lines meet
GCF of given monomials are 
<em><u>Solution:</u></em>
<em><u>Given that we have to find the greatest common factor</u></em>
Given monomials are:

When we find all the factors of two or more numbers, and some factors are the same, then the largest of those common factors is the Greatest Common Factor
Let us first find the GCF of 20 and 8 and then find GCF of variables and then multiply them together
<em><u>GCF of 20 and 8:</u></em>
The factors of 8 are: 1, 2, 4, 8
The factors of 20 are: 1, 2, 4, 5, 10, 20
Then the greatest common factor is 4

Thus GCF is 
<em><u>Therefore GCF of monomials are:</u></em>

Thus GCF of given monomials are 