Question

28 & 21 plz plz plz urgent please give me answer urgent plz

Answer 1

volume of wall=lbh=600*500*50=15000000
cement=1/20*15000000=750000
remaining=14250000=X*25*12.5*7.5
X=6080bricks

Answer 2

Answer:

Step-by-step explanation:

I will answer tomorrow