Answer:
36pi
Step-by-step explanation:
Since the formula for the circumference is C=2*pi*r
12pi=2*pi*r we can divide and get r=6 cm
Then, we can use the formula for the area of a circle: Area=pi*r^2 and get Area=pi*6^2=36*pi.
Answer:
Step-by-step explanation:
Answer:
diameter is 26, circumference is approximately 81.68, area is approximately 530 m squared
Step-by-step explanation:
Answer: y = -5x - 3.
Explanation:
When you know the slope and the y-intercept you can directly write the slope-intercept equation of the line.
The slope-intercept equation of the line has the form: y = mx + b, where m is the slope and b is the y-intercept.
Here you know m = -5 and b = -3, hence you just have to substitute those values in the general slope-intercept form, which is:
That equation represents the line, which means tha every point in the line will be an ordered pair of the function. For example:
x y = -5x - 3
- 10 -5(-10) - 3 = 50 - 3 = 47
0 0 - 3 = - 3 (this is the y-intercept)
10 -5(10) - 3 = - 50 - 3 = - 53
