Find the value of sin 15°.
\(\frac{\sqrt{3}+1}{2\sqrt{2}}\)
\(\frac{\sqrt{3}-1}{2\sqrt{2}}\)
\(\frac{\sqrt{3}+1}{\sqrt{2}}\)
\(\frac{\sqrt{3}-1}{\sqrt{2}}\)
B.\(\frac{\sqrt{3}-1}{2\sqrt{2}}\)
The diameter of circle whose perimeter is 8.8 cm is ______. (π = \( \frac{22}{7} \))
2.8 cm
1.4 cm
5.6 cm
0.28 cm
A. 2.8 cm