Answer:
2π
Step-by-step explanation:
Area = πr^2
= π2^2
= 4π
4π is the area of the whole circle, so divide it in half to get the semicircle.
<u>= 2π</u>
Answer: 576 inches or 48 feet
Step-by-step explanation:
set up a proportion where 
so you get drawingAB = 24 in
actualAB = 18 feet = 18 * 12 in = 216 in
drawing perimeter = 64 in
so plug these in to get
rearrange to get 
and solve to get 576 inches or 576/12 = 48 feet
Answer:
25
Step-by-step explanation:
65+A=90
A=90-65=25
Answer:
n = 8.
Step-by-step explanation:
The 2 lines are the same length so
4n + 12 = 2n + 28
4n - 2n = 18 - 12
2n = 16
n = 8.
Answer:
The relationship between <em>X</em> and <em>Y</em> is <em>y</em> = 3·<em>x</em>.
Step-by-step explanation:
Form the equation representing the relationship between <em>X</em> and <em>Y</em> using the two-point form formula as follows:
Consider the two points on the line:
A = (1, 3)
B = (2, 6)
The formula is:

Compute the equation as follows:





Thus, the relationship between <em>X</em> and <em>Y</em> is <em>y</em> = 3·<em>x</em>.