A) 10 cm
B) 7 cm
C) 6 cm
D) 7.5 cm
Correct Answer: D
Solution :
(d): \[\Delta ABC\] is right angled at B Using Pythagoras theorem, \[A{{C}^{2}}=A{{B}^{2}}+B{{C}^{2}}\] \[\therefore \]\[AC=15cm\] And in case of right angled triangle, radius lies on hypotenuse and is the circumcircle of \[\Delta ABC.\] \[\therefore \]Radius of circumcircle \[=\frac{15}{2}=7.5\] cm
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