Question

In triangle ABC,right angled at B ,side AB =12cm and AC =20 cm .find the length of PQ where P and Q are the midpoints of AB and AC respectively.​

Answer 1

Answer:

$AC^{2}=AB^{2} +BC^{2}$

$BC^{2} =AC^{2} -AB^{2}$

$BC^{2} =AC^{2} -AB^{2}$

$BC=\sqrt{256}$

           =16 cm

PQ=1/2*16         (MIDPOINT THEOREM)

     =8 cm

Step-by-step explanation: