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A) 8 in
B) 7 in
C) 6 in
D) 5 in
E) 4 in
Updated on: 03 Aug 2015, 13:42
Originally posted by Bunuel on 17 Sep 2013, 01:17.
Last edited by ENGRTOMBA2018 on 03 Aug 2015, 13:42, edited 1 time in total.
Last edited by ENGRTOMBA2018 on 03 Aug 2015, 13:42, edited 1 time in total.
Corrected the typo.
Kudos
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In the figure above, a circular hoop is rolling along a flat surface in a straight line. If point A touches the surface at 25-inch intervals, then the radius of the hoop is approximately
A) 8 in
B) 7 in
C) 6 in
D) 5 in
E) 4 in
We are basically given that the circumference of the circle is 25 inches --> \(2\pi{r}=25\) --> \(r=\frac{25}{2\pi}\approx{\frac{25}{6.28}}\approx{4}\).
Answer: E.
03 Aug 2015, 13:30
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Bunuel
In the figure above, a circular hoop is rolling along a flat surface in a straight line. If point A touches the surface at 25-inch intervals, then the radius of the hoop is approximately
A) 8 in
B) 7 in
C) 6 in
D) 5 in
E) 4 in
We are basically given that the circumference of the circle is 24 inches --> \(2\pi{r}=25\) --> \(r=\frac{25}{2\pi}\approx{\frac{25}{6.28}}\approx{4}\).
Answer: E.
