Yes a sphere can be considered to be a curved plane 3 dimensional figure.
A circle or a sphere
A Circle.
A circle is a plane figure. A 'circular' solid figure would be a sphere.
The question is meaningless. A square is a plane figure which has "area" and not "volume" as in a sphere..
It is a circle or a sphere
A sphere perhaps
Sphere
No, the sun is not a plane figure. It is a 3-dimentional astronomical object we call a star. Plane figures have just two dimensions.
Circle in 2D is a straight figure drawn on a plane. But if we take it as a sphere,it cannot be straight.
The intersection of a sphere with a plane is a point, or a circle.
It is incorrect to say that sphere has lateral area. First sphere do not have sides like other geometric figure. In fact a line or plane can intersect the surface of a sphere in just one point. Sphere has no lateral side. It is enough to say surface area of sphere than lateral surface area of the sphere.
Not necessarily. A plane dissecting a sphere would create a circle in that plane. so in order for the "line" to be both on the plane and the sphere the line would have to be a curve or segment of a circle.