A) 6 cm
B) 2.5 cm
C) 8 cm
D) 8.5 cm
Correct Answer: B
Solution :
(b): Diameter of a circle = Diagonal of rectangle \[BC=4cm,\,CD=3cm.\] \[\therefore \]\[BD=\sqrt{B{{C}^{2}}+C{{D}^{2}}}=\sqrt{{{4}^{2}}+{{3}^{2}}}=\sqrt{16+9}\] \[=\sqrt{25}=5\]cm. \[\therefore \] Radius of a circle=\[BO=\frac{BD}{2}=\frac{5}{2}=2.5\]cm.You need to login to perform this action.
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