Odpowiedzi

  • Użytkownik Zadane
2013-07-16T21:41:53+02:00

a = 1dm

d1 = x dm

d2 = x + 60% * x = x + 0,6x = 1,6x dm

 

(1/2d1)^2 + (1/2d2)^2 = a^2

(1/2x)^2 + (0,8x)^2 = 1^2

1/4x² + 0,64x² = 1

0,25x² + 0,64x² = 1

0,89x² = 1

x² = 100/89

 

 

P = 1/2 * d1 * d2

P = 1/2 * x * 1,6x

P = 0,8x²

P = 0,8 * 100/89

P = 8/10 * 100/89

P = 80/89 dm²