Answer:
x=9
Step-by-step explanation:
To solve for x, you can set up a proportion between the 2 triangles we see.
The small triangle can be written as 
, and the large triangle can be written as 
.
Set both proportions equal to each other.
Cross multiply and solve for x.
32x+272=560
32x=288
x=9
Answer:
Ok, we know that the width of the door is 4.20m.
Then, if the arc is at the top of the door, we will have that the diameter of that "half circle" will be equal to the width of the door.
Then the diameter of the arc is 4.20m
And the radius is defined as half of the diameter, so we have:
radius = 4.20m/2 = 2.10m
And we can write this in cm (because the probelm ask for it)
1m = 100cm
then 2.10m = 2.1*100cm = 210cm
Now, we know that the perimeter of a circle is:
P = 2*pi*r
where pi = 3.14
Then the perimeter (or arc) of half a circle will be half of that:
Arc = (2*pi*r)/2 = pi*r
and r = 210cm, pi = 3.14
Arc = 3.14*210cm = 659.4cm
The pay section I hope that helped a little bit
Answer:
The answer of a is 56
Step-by-step explanation:
139 - 83 = 56
Answer:
I am not sure
Step-by-step explanation:
I think if you look through and keep waiting for answers you'll eventually get it
