Page 120 - Math Course 1 (Book 2)

Lateral and Surface Area of Prisms and Cylinders

Mo. 10

Lesson 3 surface area

The surface area is the sum of the lateral area plus
the area of the bases.

KEY CONCEPTS:
1. Find lateral area and surface areas of P
prisms. Area of
2. Find lateral area and surface areas of Base(B)
cylinders.
Lateral
Area
h
MO. 10 - L3a
Area of
Lateral and Surface Area Base(B)

of Prisms
Key Concept
Vocabulary A-Z

Let us learn some vocabulary Lateral Area and Surface
Area of A Prism

The lateral area L of a prism is the
Words perimeter of the base P times the
net height h.
A net is a two-dimensional pattern for a three-
dimensional f gure. Symbols L = Ph

I The surface area S of a prism is the
lateral area L plus the area of the
top Words
w w bases 2B.
(bottom) l
Symbols S = L + 2B or S = Ph + 2B
h side side side side h

base w Model
w
(bottom)
A net allows you to sell all the surfaces. Area of
Base (B) P
lateral faces
Faces that are not bases are called lateral faces.
Area of h
Base (B)
w
lateral area l
The lateral area is the sum of the areas of the
lateral faces. P
Area of
Base(B)
Lateral
Area Lateral
Area h Area
of Bases h
w
l
Area of
Base(B)

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