5 ft 14 ft 12 ft p= 12 + 14 + 12 + 14 = 52 L.A. = ph = 52 5 = 260 %3D %3D %3D B = bh = (5)(12) = 30 %3D %3D S.A. = L.A. + 2B %3D = 320 260 2(30) %3D The surface area is 320 ft-.
5 ft 14 ft 12 ft p= 12 + 14 + 12 + 14 = 52 L.A. = ph = 52 5 = 260 %3D %3D %3D B = bh = (5)(12) = 30 %3D %3D S.A. = L.A. + 2B %3D = 320 260 2(30) %3D The surface area is 320 ft-.
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
Related questions
Question
Identify the error(s) in planning the solution or solving the problem. Then write the correct solution.
Transcribed Image Text:5 ft
14 ft
12 ft
p = 12 + 14+ 12 + 14 = 52
L.A. = ph = 52 5 = 260
%3D
%3D
%3D
B= bh =(5)(12) = 30
%3D
%3D
S.A. = L.A. + 2B
%3D
= 260 + 2(30) = 320
%3D
%3D
The surface area is 320 ft2.
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