A triangle PQR is right angled at R, with PQ=80cm and R=60cm. find QR?
pythagorus theorem
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer:
Solution given:
A triangle PQR is right angled at R, with hypotenuse{h}PQ=80cm 
and 
base[b]PR=60cm. 
perpendicular [P]= QR
<u>by</u><u> </u><u>using</u><u> </u><u>Pythagoras</u><u> </u><u>law</u>
<u>h²</u><u>=</u><u>p²</u><u>+</u><u>b²</u>
80²=QR²+60²
QR²=80²-60²
QR=
QR=20 =52.9=53cm
=52.9=53cm
<u>QR</u><u>=</u><u>5</u><u>3</u><u>c</u><u>m</u><u>.</u>
 
                                
             
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