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AdityaHongunti
24 Mar 2018, 23:40
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The short and long hands of a clock are 4cm and 6cm long respectively. What will be the sum of distances travelled by their tips in 4 days ? ( π = 3.14)
A. 954.56 cm
B. 3818.24 cm
C. 2909.12 cm
D. 2703.56 cm
Sent from my XT1562 using GMAT Club Forum mobile app
A. 954.56 cm
B. 3818.24 cm
C. 2909.12 cm
D. 2703.56 cm
Sent from my XT1562 using GMAT Club Forum mobile app
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25 Mar 2018, 00:24
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The short and long hands of a clock are 4cm and 6cm long respectively. What will be the sum of distances travelled by their tips in 4 days ? ( π = 3.14)
A. 954.56 cm
B. 3818.24 cm
C. 2909.12 cm
D. 2703.56 cm
in my calculation I get following:
long is 6 and there is 24h per day so we have in 4 days, 4x24 x 2rπ= 1152π
short is 4 so we have 4x2rπx2=96π
1152π+96π=1216π and 1216x3.14=3818.24 cm
A. 954.56 cm
B. 3818.24 cm
C. 2909.12 cm
D. 2703.56 cm
in my calculation I get following:
long is 6 and there is 24h per day so we have in 4 days, 4x24 x 2rπ= 1152π
short is 4 so we have 4x2rπx2=96π
1152π+96π=1216π and 1216x3.14=3818.24 cm
AdityaHongunti
25 Mar 2018, 00:28
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