Question

An arc is a semiperimeter when it cuts are the end of diameter

Answer 1

Hi,

I did'nt understand ur question as it isn't clear....

however I can help u with a few basics for u to solve the prob urself.

follow the explaination below..... :)

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A circle is a geometric figure,

more precisely , the locus of a point at a fixed distance around a fixed point called the centre... and the fixed distance is called : radius;

now ,

arcs are specific lengths of the circumfrence of the circle...

arclength = radius x angle made by radius vector with reference line (in radians)

[ l = r Θ ]

for circumfrence of circle ... angle made = 2$\pi$ radians;

therefore subs. in formula ;

we get

circ. = r x 2$\pi$

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Ps. enjoy;)