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//determine reactions at A,B and D
//Refer fig. 3.55
//Taking moment about C
RD=(3*5*2.5+(5*9*2*5)/(2*3))/7  //kN
RC=15+22.5-RD  //kN
//Taking moment about A
RB=(2*RC/5)  //kN
RA=RC-RB  //kN
printf("Required reactions are:-\nRA=%.2f kN\nRB=%.2f kN,\nRD=%.2f kN",RA,RB,RD)