Chapter 9

Question 1

solids or solid figures

Answer 1

three dimensional shapes

Question 2

polyhedron

Answer 2

a solid formed by polygons

Question 3

faces

Answer 3

the plane surfaces

Question 4

edges

Answer 4

the segments joining the vertices

Question 5

Types of solids

Answer 5

Rectangular Prism, Triangular Prism, Cube (Square prism)

Rectangular pyramid, triangular pyramid, pentagonal pyramid

Cylinder, Cone, Sphere

Question 6

Prism

Answer 6

a polyhedron with two congruent faces that lie in parallel planes

Question 7

surface area

Answer 7

the sum of the areas of polyhedron’s faces

Question 8

Lateral faces

Answer 8

faces of the prism that are not bases

Question 9

Lateral area

Answer 9

the sum of the areas of the lateral faces

Question 10

Surface area of a prism

Answer 10

Surface area = 2(area of base) + (perimeter of base)(height)

Question 11

cylinder

Answer 11

a solid with two congruent circular bases that lie in parallel planes
The lateral area of a cylinder is the area of the curved surface

Question 12

Surface area of a cylinder

Answer 12

Surface area = 2(area of bases) + (circumference of base)(height)

Question 13

pyramid

Answer 13

a polygon and the lateral faces are triangles with a common vertex

Question 14

height of a pyramid

Answer 14

the perpendicular distance between the vertex and base

Question 15

slant height of a pyramid

Answer 15

the height of any of its lateral faces

(slant height)^2 = (height)^2 + (1/2 side)^2

Question 16

Surface area of a pyramid

Answer 16

Surface area = (area of base) + 1/2(perimeter of base)(slant height)

Question 17

cone

Answer 17

the solid has a circular base and a vertex that is not in the same plane as the base

Question 18

height of a cone

Answer 18

the perpendicular distance between the vertex and the base

Question 19

slant height of a cone

Answer 19

the distance between the vertex and a point on the base edge

Question 20

Surface area of a cone

Answer 20

Surface area = (area of base) + (area of sector)

= (area of base) + 3.14(radius of base)(slant height)

Question 21

volume

Answer 21

of cubit units contained in its interior

Question 22

volume of a prism

Answer 22

Volume = (area of base)(height)

Question 23

volume of a cylinder

Answer 23

Volume = (area of base)(height)

= 3.14(radius)^2 of height

Question 24

Volume of a pyramid

Answer 24

Volume = 1/3(area of base)(height)

Question 25

Volume of a cone

Answer 25

Volume = 1/3(area of base)(height)

Question 26

sphere

Answer 26

the set of all points in space that are the same distance from a point, the center of the sphere.

Question 27

hemispheres

Answer 27

a geometric plane passing through the center of a sphere divides it into two hemispheres

Question 28

Surface area of a sphere

Answer 28

Surface area = 4(3.14)(radius)^2

Question 29

Volume of a sphere

Answer 29

Volume = 4/3(3.14)(radius)^3