Name ________________________________
Objective:
Date _________ Block ________
Find the perimeter and area of common plane figures.
Figure
Square
Diagram
Outside
Perimeter
Inside
Area
s = length of a side
s = length of a side
Perimeter
Area
l = length
w = width
l = length
w = width
Area
s
Rectangle
h=w
b=l
Parallelogram
h
b
b = base
h = height
h
b
Kite and Rhombus
Perimeter
u
Area
u
Rhombus:
t
Kite:
s
t
Triangle
s = length of a side
u= length of 1 pair of
congruent sides of kite
t = length of other pair of
congruent sides of kite
Perimeter
d = length of a diagonal
a,b, and c = sides of the
triangle
b = base
h = height
Perimeter
Area
Area
h
b
h
h
b
b
Trapezoid
b
a
c
h
a, b1, b2, and c = sides of
the trapezoid
b
Circle
b = bases
h = height
Circumference
Area
r = radius
d = diameter
r = radius
d = diameter
Exact Values: ______________________________________________
Rounded Values: ____________________________________________
Name ________________________________
Date _________ Block ________
Find the area of the given figure.
1) Shape :
6
Formula:
10
2) Shape :
Formula:
7
3) Shape :
5
5
Formula:
4
6
4) Shape :
Formula:
Find the Area of the figure described. Draw a picture!
5) Right triangle with a hypotenuse of 5 cm
and a base of 4 cm.
6) Square with a Perimeter of 24 m.
Name ________________________________
Date _________ Block ________
Use a known area to find measurements.
Example: The base of a triangle is 24 feet. Its area is 216 square feet. Find the height of the triangle.
1
A  bh
2
____ =
1
( __ ) h
2
____ = ___h
h = ___ feet
Find the value of x. Use the area formula! Plug in what you know and solve for x.
7) A  63 cm2
8) A  70 cm2
x
7 cm
Find the area of shaded region. You will either have to add or subtract areas.
9)
10)
Name ________________________________
Practice Problems
1.
2.
3.
Date _________ Block ________