Answer:
A=63.6 approximately
Step-by-step explanation:
P=14.28
p=1/4(2pi*r)
p=1/2pi*r
14.28=1/2pi*r
28.56=3.14*r
r=9...... approximately
A=1/4pi*r^2
A=0.25*3.14*81
A=63.6......approximately
Since the value of S is not given, and m is not given, It is already in its simplest form.
Answer:
see the procedure
Step-by-step explanation:
we know that
The scale factor of the model is 1/30
That means ----> 1 unit in the model represent 30 units in the actual
so
using proportion
Find out how much represent 5 ft in the model
Convert feet to inches
Remember that
so
Let
x -----> the diameter of the circular window in the model house in inches
Simplify
therefore
The diameter of the circular window in the model house is 2 inches
see the attached figure to better understand the problem
The equation is -42=2a+15
I just picked the variable to be a
Now I would divide 2a by 2 to make it just a
And divide -42 by 2 to make it -21. Then you would have -21=a+15
Subtract 15 from 15 to cancel it out
And then subtract 15 from -21 to get
-36=a
the variable is -36
Write down the formula for finding the circumference of a circle using the radius. The radius is half as long as the diameter, so the diameter can be thought of as 2r. Keeping this in mind, you can write down the formula for finding the circumference of a circle given the radius: C = 2πr. In this formula, "r" represents the radius of the circle. Again, you can plug π into your calculator to get its numeral value, which is a closer approximation of 3.14.
