SVP,AIDEZ MOI A FAIRE CA. URGENT. MERCI BEAUCOUP

bonsoir

a = (1000 - 100 ) / 10 = 900 : 10 = 90

b = 10000 + 1000 = 11 000 / 100 = 110

c = 0,01 - 0,001 = 0,009 / 0,0001 = 90

IS² = Rs² - RI²
IS² = 169 - 144 = 25
Is = √25 = 5 cm

TC² = 64²+ 48²
TC² = 6400
Tc = √6400 = 80 mm

ME² = 87² - 60²
ME² = 3969
ME = √3969 = 63