Question

Triangle PQR is inscribed in a circle. If $PQ=4cm$, then $QR$ is equal to

• A. $4cm$
• B. $8cm$
• C. $6cm$
• D. cannot be determined from given data

Answer 1

The correct option is A $4cm$

Consider the given figure and given value of side of triangle,

In triangle $\Delta PQR$

$PQ=4cm$

$\angle P=\angle R=X^0$

Now,

$PQ=PR=QR=4cm$ (Opposite angle to equal side are equal)

Hence, this is the answer.