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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
71% (01:44) correct
29%
(01:43)
wrong
based on 141
sessions
History
Date
Time
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A gas pipe has an outside diameter of 24 inches. The steel wall of the pipe is 1 inch thick. What is the area of the cross-section of the steel wall of the pipe?
A. 23π
B. 47π
C. 147π
D. 529π
E. 575π
A. 23π
B. 47π
C. 147π
D. 529π
E. 575π
Updated on: 14 Jun 2019, 02:09
Originally posted by CareerGeek on 14 Jun 2019, 00:55.
Last edited by CareerGeek on 14 Jun 2019, 02:09, edited 2 times in total.
Last edited by CareerGeek on 14 Jun 2019, 02:09, edited 2 times in total.
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Bunuel
**Edited
Area of cross-section of the steel wall of the pipe = π*(12)^2 - π*(11)^2
= π(12 + 11)(12 - 11)
= 23π
IMO Option A
Pls Hit Kudos if you like the solution
