Name:
Area and Perimeter of a Triangle
Find the area and perimeter of each triangle.
cm
10 cm
area =
area =
perimeter =
perimeter =
perimeter =
d.
e.
f.
m
20 m
11
26
13 m
area =
area =
area =
perimeter =
perimeter =
perimeter =
g.
h.
i.
30 km
km
38
44 cm
30 m
m
area =
area =
area =
perimeter =
perimeter =
perimeter =
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km
26 cm
m
50 km
48
m
m
27 m
m
51 c
36
23 m
20 cm
cm
16 km
28
km
20 cm
22 m
9 km
km
area =
15
17 cm
16 mm
8m
20 c
m
mm
12 mm
20
m
12
c.
12
11 m
m
b.
24
a.
ANSWER KEY
Area and Perimeter of a Triangle
NOTE: The measurements of the triangles have been rounded to the nearest
whole number. Triangles are not drawn to scale.
Find the area and perimeter of each triangle.
32 m
48 mm
perimeter =
e.
20 m
m
26
area =
perimeter =
130 m2
61 m
h.
cm
38
26 cm
27 m
m
23 m
km
m
m
44 cm
m
93 mm
50 km
48
36
m
30 m
perimeter =
68 cm
perimeter =
i.
51 c
345 mm2
200 cm2
area =
30 km
42 km
g.
area =
cm
13 m
72 km2
perimeter =
20 cm
km
20 cm
28
11
f.
16 km
area =
54 cm
perimeter =
22 m
15
9 km
km
d.
85 cm2
area =
km
perimeter =
10 cm
96 mm2
area =
17 cm
44 m2
20 c
m
16 mm
8m
area =
mm
12 mm
20
m
12
c.
12
11 m
m
b.
24
a.
area =
perimeter =
572 cm2
121 cm
area =
750 km2
perimeter =
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136 km