Question

If p-q-r d(pq)=5cm d(pr)=11cm then find d(qr)

Answer 1

according to given info

p-q-r

means q comes between the point p and r

therefore pq =5 pr=11

we know that pq +qr=pr

therefore 5 +qr =11

therefore qr =11-5

qr=6

therefore d(qr)=6 cm