Sagot :
Bonsoir
h+r =5 et h²- r² = 4
h = 5 - r alors ( 5 - r )² - r² = 4
25 + r² - 10r - r² = 4
-10r = 4 - 25
r = -21/10
h = 5 - (21/10)
h = (50/10) - (21/10)
h = 29/10
On sait que h2-r2 donc h+r= 5
H= 5 - r (5-r)2 - r 2 = 4 25 + r 2
10-r2 = 4 -10r = -21/10
H= 5- (21/10) don h = 29/10
H= 5 - r (5-r)2 - r 2 = 4 25 + r 2
10-r2 = 4 -10r = -21/10
H= 5- (21/10) don h = 29/10