Answer:
D
Step-by-step explanation:
4/4 = 1
The full length of one line times the length of the line outside the circle is equal the the other line.
(7+x)*7 = (13 +8) * 8
Simplify:
7x +49 = 21 * 8
7x +49 = 168
Subtract 49 from each side:
7x = 119
Divide both sides by 7:
x = 17
The answer is B. 17
Area= ¶r^2 = 3.14*(12/2)^2 = 3.14*36 ≈ 113.04
Answer:
4.69 inches (2 decimal places)
Step-by-step explanation:
Refer to image attached to this answer:
Using Pythagoras Theorem:
![AB^2+AC^2=BC^2](https://tex.z-dn.net/?f=AB%5E2%2BAC%5E2%3DBC%5E2)
![2^2+3^2=BC^2](https://tex.z-dn.net/?f=2%5E2%2B3%5E2%3DBC%5E2)
![4+9=BC^2](https://tex.z-dn.net/?f=4%2B9%3DBC%5E2)
![BC^2=13](https://tex.z-dn.net/?f=BC%5E2%3D13)
-------------------------
Using Pythagoras Theorem,
![BC^2+CD^2=BD^2\ (x)](https://tex.z-dn.net/?f=BC%5E2%2BCD%5E2%3DBD%5E2%5C%20%28x%29)
![13+3^2=BD^2](https://tex.z-dn.net/?f=13%2B3%5E2%3DBD%5E2)
![13+9=BD^2](https://tex.z-dn.net/?f=13%2B9%3DBD%5E2)
![BD=\sqrt{22} = 4.69\ (2d.p.)](https://tex.z-dn.net/?f=BD%3D%5Csqrt%7B22%7D%20%3D%204.69%5C%20%282d.p.%29)