Question

Find the area of square whose diagonal is 6cm?

Answer 1

as we know that diagonal of a square bisects 
therefore , BO = OC = 3cm
 now in triangle OBC = BO = 3cm
                                  OC = 3cm
     BC^2 = OC^2 + BO^2 
              = 3^2  +  3^2   cm^2
              = 9 + 9 cm^2
              = 18cm^2
    



            
   

Answer 2

BO = OC = 3cm
 now in triangle OBC = BO = 3cm
                                  OC = 3cm
     BC^2 = OC^2 + BO^2 
              = 3^2  +  3^2   cm^2
              = 9 + 9 cm^2
              = 18cm^2