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06 Sep 2019, 05:06
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
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73% (02:37) correct
27%
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The length of a cube is three times its width and half of its height. If the volume of the cube is 13,122 Cm cubed. What is the height of the cube?
A. 49.
B. 50.
C. 54.
D. 68.
E. 81.
A. 49.
B. 50.
C. 54.
D. 68.
E. 81.
06 Sep 2019, 05:18
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l=3b=h/2
Volume=lbh => h^3/12 = 13122
=> h^3 = 3^9*2^3
=> h=54
Posted from my mobile device
Volume=lbh => h^3/12 = 13122
=> h^3 = 3^9*2^3
=> h=54
Posted from my mobile device
06 Sep 2019, 06:48
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given ,
L=3B=H/2
volume = L*B*H; h/2 *H/6*H=13122= 13122*12=157464,
Do not waste time in taking the cube root. check answer choices.
only 4 cube will end with 4 in the answer choice so answer is 54, option C
L=3B=H/2
volume = L*B*H; h/2 *H/6*H=13122= 13122*12=157464,
Do not waste time in taking the cube root. check answer choices.
only 4 cube will end with 4 in the answer choice so answer is 54, option C
