Answer:
- For semicircle examples, skip to section 1
- For parallelogram examples, skip to section 2
To find the perimeter of a parallelogram, use the formula, 2(a+b)
To find a semicircle perimeter, use the formula of (π × r) + (2 × r)
<em>note that without any specified values for the shapes, you cannot properly find a value.</em>
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1. 
So let's say I have a bowl that is ironically shaped like a semicircle, and its radius is 6 units.
- What we know is that the semicircle has a radius of 8 units, and what we must find is the perimeter.
Use the formula from earlier.(Using 3.14 for pi)


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2. 
And let's say I have a new origami shape that contains a figure similar to a parallelogram. We want to find it's perimeter. What is the first step?
- The first step is using the parallelogram perimeter formula as listed below and above.

Where <em>a</em> is the side and <em>b</em> is the base.
- And let's also say this figure has a base of 7 and a side of... let's say a side length of 9
- Now that we have values, use the formula to solve.

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If you have any questions, please reach out via the comments. I hope this helps, and have a great day!
Step-by-step explanation:
9 = x/12
We will multiply 12 by 9
12 × 9 = x
108 = x
Answer:
8 inches
Step-by-step explanation:
Assuming the two triangles are similar:
Scale Factor = 5/2 = 2.5
20/2.5 = 8 inches
Answer:
x = -2
Step-by-step explanation:
(4x + 23)/3 = 5
4x + 23 = 5 × 3
4x + 23 = 15
4x = -8
x = -2
Answer:
d) (-3/2, -1/2)
Step-by-step explanation:
The midpoint (M) between two given points is the average of their coordinate values:
M = (A + B)/2 = ((-8, 1) +(5, -2))/2 = (-3, -1)/2
M = (-3/2, -1/2) . . . . . matches choice D