An isosceles triangle with sides 13cm,13cm and base of 10cm is inscribed in a circle with radius r.what is the value of 'r'?  Pick:  A) 3  B) 4  C) 5  D) 6  E) 7
height of triangle = (13^2 - (10/2)^2)^1/2 = 12 cm   area of triangle = abc/4r = (1/2)*base*height   =&gt; 13*13*10/ 4r = 1/2 *10*12   =&gt; r = 169/24 = 7.04   ANSW7R:7
<result>E</result>
An isosceles triangle with sides 13cm,13cm and base of 10cm is inscribed in a circle with radius r.what is the value of 'r'?