suhera77 suhera77
  • 20-01-2020
  • Mathematics
contestada

Un trapèze a une aire de 39 cm2. Sa grande base
mesure le triple de sa petite base. Sa hauteur
mesure 3 cm.
Trouve les dimensions des bases de ce trapèze.

Respuesta :

fishouttawater fishouttawater
  • 20-01-2020

Answer:

A = bh/2

39 = b*3/2

39*2 = b*3/2 * 2

78 = b*3

78/3 = b*3/3

26 = b.

Alors, la grande base est 26 cm et le petit base serait 26/3 = 8.67 cm arrondi.

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