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Worksheets

Surface Area of Triangular Pyramids

Total questions: 15

Worksheet time: 1hrs 9mins

Name
Class
Date
1.
Find the surface area of the triangular pyramid.
a)
123.6 sq. feet
b)
116.8 sq. feet
c)
127.9 sq. feet
d)
130.9 sq. feet
2.
What is the surface area of this triangular pyramid?
a)
198.9 sq. inches
b)
205.6 sq. inches
c)
187.9 sq. inches
d)
210.6 sq. inches
3.

Find the surface area of a triangular pyramid with base lengths of 10 and base height of 8.7 and slant height of 14.

a)

609 m2

b)

210 m2

c)

297 m2

d)

253.5 m2

4.

Find the surface area of the triangular prism with base lengths 15, base height 13 and slant height 10.

a)

322.5 in2

b)

367.5 in2

c)

270 in2

d)

975 in2

5.

Find the total surface area of the following triangular pyramid.

Each triangle is congruent, with a base of 7 ft. and a height of 6ft.

a)

168 ft²

b)

126 ft²

c)

84 ft²

d)

42 ft²

6.
Find the total surface of the figure. (all triangles are congruent)
a)
30 in2
b)
15 in2
c)
45 in2
d)
60 in2
7.
Find the lateral area and surface area of each figure. Round your answers to the nearest tenth, if necessary.
a)
212 ft²; 322 ft²
b)
152.6 cm²; 187.7 cm²
c)
219.6 in²; 313.2 in²
d)
50.4 in²; 66.4 in²
8.

What is the surface area of the triangular pyramid?

a)

105.9

b)

90.3

c)

74.7

d)

99.6

9.

Find the total surface area of the shape above.

a)

140.4

b)

280.8

c)

105.3

d)

210.6

10.

The following triangular pyramid is made up of congruent triangles. What is the total surface area of the triangular pyramid?

a)

30

b)

15

c)

60

d)

120

11.

Find the total surface area of the net.

a)

27.6

b)

82.8

c)

110.4

d)

220.8

12.

What is the surface area of the net?

a)

31.2

b)

124.8

c)

61.2

d)

46.8

13.

Find the total surface area of the triangular pyramid.

a)

2740

b)

1170

c)

780

d)

390

14.

Find the base area of the triangular pyramid.

a)

21.3

b)

49.2

c)

15.6

d)

62.4

15.

Find the total surface area if the base of the triangular prism is 8.7 cm squared.

a)

35

b)

43.5

c)

218.7

d)

113.7