Saved Bookmarks
| 1. |
A wall 24 m long 5 m high and 0.25 m rhick is to be constructed using bricks measuring 25cm X 12.5 cm × 7.5 cm.Find the no. of bricks required, if 5% of the wall is occupied by cement and sand mixture. |
|
Answer» VOLUME of WALL=24×5×0.25=30m³ volume of CEMENT and BRICKS=5% of wall=5/100×30=1.5m³ volume of wall that CONTAIN only bricks=30-1.5=28.5m³ volume of brick=25×12.5×7.5=3/1280 no of bricks=28.5/3/1280=285×128 /3=12160 bricks |
|