how many bricks are required to build a wall 30m long , 30cm thick and 5m high with a provision of 2 doors each 1.2m x 2.5m and each brick measures 20cm x 16cm x 8cm when one ninth of the wall is filled with lime
Answers
Step-by-step explanation:
Total area of wall= 2(lb+bh+hl)
= 2(30×0.3+0.3×5+5×30)
= 2×160.5
= 321m^2
Area of 2 doors = l×b
= 2(1.2×2.5)
= 6 m^2
Area of lime filled wall=Total area of wall
/9
=321/9
= 36 m^2
Area of bricks=
2(0.2×0.08+0.08×0.16+0.16×0.2)
Z = Total area of wall (Area of door - Area of lime filled wall)
No. of bricks = Z/Area of brick
Step-by-step explanation:
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