The perimeter of the semicircle is 19π cm if the diameter of the circle is 38 cm.
<h3>What is a circle?</h3>
It is described as a set of points, where each point is at the same distance from a fixed point (called the centre of a circle)
We have a circle with diameter of 38 cm.
Diameter = 38 cm
The radius of the circle = 38/2 = 19 cm
Perimeter of the circle = 2πr = 2π(19) = 38π cm
Perimeter of the semicircle = 38π/2 = 19π cm
Thus, the perimeter of the semicircle is 19π cm if the diameter of the circle is 38 cm.
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Answer:
The point w is located at -4/3
Step-by-step explanation:
Point z is halfway between point w and x
Point x is halfway between point z and y
Point z is located at 1/3 and point y is located at 11/3
Please refer to the number line attached
Then the x is located at the mid-point of z and y


Since z is the mid-point of w and x

Therefore, the point w is located at -4/3
This is a simple equation:
x - 7 < 14
x < 14 + 7
x < 21
→ Many people think that because there is not "=" sign they don't flip the sign of what in this case is -7. But actually, the symbols "<" and ">" act as the equal sign. This rule doesn't apply to positive number, only negative.
Hope it helped,
BioTeacher101
(If you have any questions, feel free to ask them in the comments)
Answer:

Step-by-step explanation:
Using the Foil method
you multiply x times x and get
Then you multiply -4 times X and get -4x
Then you multiply -3 times X and get -3x
then you add -4 and -3 together and get -7x
Lastly you multiply -4 and -3 and get 12
And there you have it

Answer:
Step-by-step explanation:
diameter = 8 cm
radius = 8/2 = 4 cm
Area of circle = πr²
= 3.14*4*4 = 50.24 cm²