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HACTEHA [7]
3 years ago
9

two arcs of concentric circles are intercepted by the same central angle. the resulting arc length of the arc of the larger circ

le is 16 m and the radius of the smaller circle is 7.5 m. find the length of the corresponding arc of the smaller circle

Mathematics
1 answer:
Bond [772]3 years ago
3 0
the complete question in the attached figure

Let
A°-----------> <span>the same central angle

</span><span>For the larger circle
length of larger circle=2*pi*r-------> 2*pi*12-----> 75.36 m

360</span>°<span> (full circle) has a length of------------> 75.36 m 
 A</span>°-----------------------------------> 16 m
A°=(16)*360/75.36--------> A=76.43°

For the smaller circle
length of smaller circle=2pi*r-------> 2*pi*7.5-----> 47.1 m

360° (full circle) has a length of------------> 47.1 m 
 76.43°-----------------------------------> X
X=76.43*47.1/360-----> X=10 m ----> length arc of the smaller circle

the answer is
the length arc of the smaller circle is 10 m

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