Lets assume center point of circle as O
OD is the radius of circle . so OD is also 7
All the sides of the triangle are equal . so angle at the center O is 60 degree.
radius = 7
Length of arc CD = 
= 
= 
= 
Answer:
D o you have the problem so I can see what I the question is?
Step-by-step explanation:
-5 x 0 = 0
4 x y = 0
Therefore,
0 = 20.
Hope this helps?
Answer:
The approximate length of the garden is at least 22 feet and at most 51 feet.
Step-by-step explanation:
A rectangular garden must have a perimeter of 145 feet.
Let x feet be the lengths of the garden. Then the width of the garden can be found using the perimeter:

The area of the garden is

The area must be at least 1,100 square feet, then

Solve this quadratic inequality:
![D=(-72.5)^2-4\cdot 1,100=856.25\\ \\\sqrt{D}=25\sqrt{1.37}\\ \\x_1=\dfrac{72.5-25\sqrt{1.37}}{2}\approx 22\\ \\x_2=\dfrac{72.5+25\sqrt{1.37}}{2}\approx 51\\ \\(x-22)(x-51)\le 0\\ \\x\in [22,51]](https://tex.z-dn.net/?f=D%3D%28-72.5%29%5E2-4%5Ccdot%201%2C100%3D856.25%5C%5C%20%5C%5C%5Csqrt%7BD%7D%3D25%5Csqrt%7B1.37%7D%5C%5C%20%5C%5Cx_1%3D%5Cdfrac%7B72.5-25%5Csqrt%7B1.37%7D%7D%7B2%7D%5Capprox%2022%5C%5C%20%5C%5Cx_2%3D%5Cdfrac%7B72.5%2B25%5Csqrt%7B1.37%7D%7D%7B2%7D%5Capprox%2051%5C%5C%20%5C%5C%28x-22%29%28x-51%29%5Cle%200%5C%5C%20%5C%5Cx%5Cin%20%5B22%2C51%5D)