bonsoir
RK/RS = EC/RB = KC/SB
84/24 = 54/SB
SB = 1 296 / 84 = 154 dm
RS² = 24² + 15.4 ²
RS² = 813.16
RS = √813.16 = 285 dm
KR² = 54 ² + 84 ²
KR² = 9 972
KR = √9 972 = 99.85.... m = 999 dm
Samuel = 285 + 999 = 1 284 dm
