brookesing45145 brookesing45145

29-07-2021
Mathematics

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Find the total surface area.

Answer Options:
A. 422 in²
B. 517 in²
C. 554 in²
D. 638 in²

Find the total surface area Answer Options A 422 in B 517 in C 554 in D 638 in class=

Respuesta :

jliu102007 jliu102007

29-07-2021

Answer:

D. 638 in^2

Step-by-step explanation:

total surface area is just the sum of areas of each side of the cube

opposite sides have the same area

top and bottom = 9*11

sides = 11*9

front and back = 11*11

SA = 2(9*11 + 11*9 + 11*11)

SA = 2(99 + 99 + 121)

SA = 2(319)

SA = 638 in^2

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