Question

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





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Answer 1

Answer:

7.2cm

Step-by-step explanation:

$by \: pythagroas \: therom \\ {pq}^{2} + {rq}^{2} equl \: to \: \: {pr}^{2} \\ {4}^{2} + {6}^{2} equal \: to \: {pr}^{2} \\ 16 + 36 \: \: \: is \: \: equal \: to \: \: {pr}^{2} \\ 52 \: eqal \: to \: \: \: {pr }^{2} \\ \\ {pr} \: equal \: \: \: to \: \: \: \sqrt{52} \: \: pr \: \: eqal \: \: to \: 7.2$