VOLUME UNIT 10 VOCABULARY

VOLUME the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great

capacity The amount of matter a container/space can hold

displacement the volume of a fluid replaced by a floating or submerged body of equal weight

AREA The size of a surface

SURFACE AREA The total area of the surface of a three-dimensional object

PI The ratio of a circle's circumference to its diameter

RADIUS a straight line from the center to the circumference of a circle or sphere

DIAMETER a straight line passing from side to side through the center of a body or figure, especially a circle or sphere

CIRCUMFERENCE the enclosing boundary of a curved geometric figure, especially a circle; perimeter of a circle

CIRCLE a round plane figure whose boundary consists of points equidistant from a fixed point

equidistant AT equal distances

CYLINDER a solid geometric figure with straight parallel sides and a circular base on each end; equal to 3 cones

HEIGHT the measurement from base to top; altitude

CONE a solid or hollow object that tapers from a circular or roughly circular base to a point; one third of a cylinder

base The area of the circular bottom end of a cone

Slant height The distance from the edge of the circular base of a cone to the vertex

vertex The top end of a cone which is a point

SPHERE a round solid figure, or its surface, with every point on its surface equidistant from its center

HEMISPHERE Half of a sphere