Remember that radius is half of the diameter (1/2 d)
10 * 2 = 20
20 is the diameter.
c
--- = 3.14 Get 'c' by itself by multiplying 20 to both sides
20
This eliminates the '20' in c/20
c = 3.14 (20)
Multiply.
c = 62.8
Your circumference is 62.8
The correct answer is C) -15.
Anyways, I hope you have a wonderful evening :)
None 3 * 66 = 198
ALL triangles have a total degree measure of 180 degrees
C(a,b), because the x-coordinate( first coordinate) is a (seeing as it is situated directly above point B, which also has an x-coordinate of a) and the y-coordinate ( second coordinate) is b (seeing as it is situated on the same horizontal level as point D, which also has a y-coordinate of b)
the length of AC can be calculated with the theorem of Pythagoras:
length AB = a - 0 = a
length BC = b - 0 = b
seeing as the length of AC is the longest, it can be calculated by the following formula:
It is called "Pythagoras' Theorem" and can be written in one short equation:
a^2 + b^2 = c^2 (^ means to the power of by the way)
in this case, A and B are lengths AB and BC, so lenght AC can be calculated as the following:
a^2 + b^2 = (length AC)^2
length AC = √(a^2 + b^2)
Extra information: Seeing as the shape of the drawn lines is a rectangle, lines AC and BD have to be the same length, so BD is also √(a^2 + b^2). But that is also stated in the assignment!
Answer:
28 units^2
Step-by-step explanation:
1. First, let's divide this figure into two shapes: a square and a trapezoid. (Look at the image below explanation for division).
2. Next, we should know the area formulas of the square and trapezoid.
- Square: , where s = side
- , where a and b = top and bottom and h = height
3. Solving Area of Square and Trapezoid
- . Area of square is 16
- . Area of trapezoid is 12.
- 16 + 12 = 28
Therefore, the area of the figure is 28 units^2.