h =

(h + 32)² =h² +1600

h² + 64h +32×32 =h² +1600

64h =1600- 32×32

8h =200 - 128

8h =72

h =9 cm

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40^2+h^2=(h+32)^2

1600=64h+32^2

1600-(40-8)^2=64h

640-64=64h

10-1=h =>h=9

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