The power is out from 23 to 3 in the morning, where do I go to watch the ball

Internet café Watch the ball tonight Red and Blue Fight = = Don't watch non-fans.

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The Toulon Cup to see is worth seeing.

England and Brazil don't want to miss out on the good performances of England and Brazil, and want to see how our little Shells perform when they return to the national team.

It's all friendly matches if you don't watch it, it's not valuable.

The Chinese Olympic Games will not be watched, but the Anglo-Pakistani battle will be watched.

It's a pity that I have to treat me tomorrow and I can't just look at it.

The games of the Chinese team are all rubbish, please don't even watch it.

I would like to ask which station is transferred in England or Brazil.

From the title, the triangle ABC is an equilateral triangle, let its center of gravity be p, let the center of the ball be o, and by the title op = r 2 = oa 2, then the triangle oap is composed of a right triangle with an angle of 30°, so only the value of pa is required, pa=2 sqrt(3) => oa=4 3, and then s=4*pi*oa 2 = ..I don't have a pen at hand, don't forget it)

Little Japan doesn't know what we do with work, and I heard that there is a saying about "releasing water".

Yes, you can make it until 3 o'clock.

Look at the results of the ** hit me!!

Thank you! ～～

Guarded throughout the day, three shifts.

If you have violated the labor law, please file a complaint with the Labor Inspection Bureau!!

Three points a, b, c in the small circle o'From ab=18, bc=24, ac=30, abc is rt

o'It is the midpoint of AC and connects を',ao.

In RT OAO'Medium: r -15 = 1 2r r = 10 3

If you think about it, I'm afraid you have to use the spatial Cartesian coordinate system. Pregnant! ABC is a right-angled triangle, and the distance from the center of the sphere to the plane ABC is the distance from the center of the sphere to the midpoint of the AC side.

Let the radius of the sphere be r, which is known by the Pythagorean theorem, rr-rr 4=225, that is, 3rr 4=225, rr 4=75, rr=300, r 0, so r=10 3

The triangle ABC is a regular triangle with the center of its circumscribed circle coincident with its center of gravity g. The length of the line is the root number 3, and the radius of its circumscribed circle is: r=(root number 3)*2 3

Let the center of the sphere be O, the diameter of the overOG is Mn, and let Mn=2R then there is mg*gn =r 2 (intersecting string theorem), that is: mg*(2r- mg)=4 3

r 2 * (2r- r 2) = 4 3 (the distance between the section and the center of the sphere is half the radius of the sphere).

i.e.: (3 4)*r 2 = 4 3

Find: r= 4 3

Therefore, the surface area of the sphere is s=4*pi* (16 9) =pi *64 9

Just make a triangular pyramid with a regular triangle (side length 2) as the base.

Find the distance between the perpendicular foot of the vertex and the point c (equal to the square root of 2 3 3), and then use the condition that the distance between the center of the sphere is equal to half of the radius of the sphere.

Let the distance between the cross-section and the center of the sphere be a, then the radius of the sphere is 2a

It forms three sides of the right triangle type. Find s=64 9