Answer:
we dont have a question or picture..?
Answer:
Vertically opposite angles
Step-by-step explanation:
Given

Required
What else can measure 
The question has missing options. So, I will give a general explanation.
Using the attached image as a point of reference.
Given that:

The value of b is calculated as:

Because b and
are vertically opposite angles
<em>This gives:</em>
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<em></em>
<em></em>
<em>So, one possible answer to the question is a vertically opposite angle</em>
Answer:
No picture?
Step-by-step explanation:
i need a picture to anwser
Yes because the 7% tax is only $1.26 so the total is $19.26
A single stepping stone as you have said is 20 inches sqaure. This means that it has an area of 20.
All you would need to do then is multiply 20 by 30 to get the area of thirty tiles. The result of this would be 600.
If you mean one side of the stepping stone is 20 inches then you would multiply 20 by 20 to get the area of one, since that would be multiplying length times width (the area formula). The area of one would result in 400 and you would then multiply this by the thirty tiles (400 times 30) to get 12000.