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Q 13. To draw a 7-pointed star, the ant must repeat the two steps 7 times,
as shown in the diagrams. In doing so, the ant makes 2 complete
revolutions. Then, A (correct to one decimal point) will be
V
a) 100.20
b) 108.2°
C) 100.8°
d) 102.9°
Answers
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Given : To draw a 7-pointed star, the ant must repeat the two steps 7 times In doing so, the ant makes 2 complete revolutions.
To find: angle A (correct to one decimal point)
Solution:
ant must repeat the two steps 7 times
ant makes 2 complete revolutions
1 complete revolution = 360°
2 Complete revolution = 2 * 360° = 720°
Number of steps taken = 7
Each angle A = 720°/7
= 102.857
= 102.9° ( upto one decimal place)
A = 102.9°
option d is correct
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