652cm3 or 652 mL
60 degrees each.
It depends on at what angle the plane and the cylinder are intersecting. If they are standing upright and intersect at 90 degrees (from the altitude of the shapes), a line in the shape of a circle forms.
The inscribed angle forms the apex of the angle. It is a point. To circumscribe the point is 360 degrees. So the inscribed angle and the reflex (outscribed) angle sum to a total of 360 degrees.
If it is a sector of a circle then the arc is the curved part of the circle which forms a boundary of the sector.
The volume of a cone is 1/3(h)(pi)(r2), where h is the height of the cone, pi is 3.1415 and r is the radius of the circle that forms the bottom. The volume of sphere is 4/3(pi)(r2) where pi is 3.1415 and r is the radius of the sphere. The (r2) means radius squared. If you put in the values of r for each and the value of h for the cone and solve the two equations, and the answers are the same, the volumes are the same. We can set the expression for the volume of a cone equal to the expression for the volume of a sphere. If, when we plug in the variables, they are equal, the volumes will be equal. Vcone = Vsphere 1/3 (h) (pi) (rc2) = 4/3 (pi) (rs2)
pi*radius^2*height or for an explanation; you want to find the area of the circle that forms the cylinder (you would be able to see the circle if you looked down on the cylinder) you find this by squaring the radius of the circle and then multiplying it by pi (approximately 3.141). You then take this result and multiply it times the height of the cylinder. This gives you the volume. You must use the same unit of measure for all your measurements (so you couldn't use a radius of 6 inches and a height of 4 feet) If your measurements are in feet then your answer is (some number) cubic feet. Inches would be cubic inches and so on.
The 180th meridian or antimeridian is the meridian which is 180° east or west of the Prime Meridian with which it forms a great circle.
60 degrees each.
The volume of carbon dioxide is 8,4 L at oC.
It depends on at what angle the plane and the cylinder are intersecting. If they are standing upright and intersect at 90 degrees (from the altitude of the shapes), a line in the shape of a circle forms.
Every line of longitude forms a great circle.
The inscribed angle forms the apex of the angle. It is a point. To circumscribe the point is 360 degrees. So the inscribed angle and the reflex (outscribed) angle sum to a total of 360 degrees.
The Circle of Willis.
You may be thinking of the Antarctic Circle.
I presume the tunnel has an arch shaped cross-section with a semicircle on top of a rectangle. In this case the volume of the tunnel is the volume of the cuboid bottom plus the volume of half cylinder which forms the top. The volume of the half cylindrical top is ½πr²h = ½ × π × (6m)² × 25m = 450π m³ The volume of the cuboid is length × width × height. The length is 25m. The width is the diameter of the top half cylinder which is twice the radius at 2 x 6m = 12 m. The height is not clear. I am going to presume it is to the top of the arch, so that the height of the cuboid is the height less the radius of the cylinder, namely 7m - 6m = 1m. Thus the volume of the cuboid bit is 25m x 12m x 1m = 300 m³ Thus the volume of the tunnel as a whole is 300 m³ + 450π m³ ≈ 1713.72 m³ (If the 7m height refers to the height of the vertical walls, then the volume of the cuboid is 25m x 12m x 7m = 2100 m³ and the volume of the tunnel is 2100 m³ + 450π m³ ≈ 3513.72 m³.)
Ellipses.
The Prime Meridian is complete as it appears on maps or globes. It forms a half-circle, and isn't missing anything. When joined with the Prime Meridian, the 180-degree meridian of longitude forms a complete great circle.