find the number of bricks,each measuring 25cm×12.5cm×7.5cm,required

1.	find the number of bricks,each measuring 25cm×12.5cm×7.5cm,required to construct a wall 6m long,5m high and 50cm thick,while the cement and the sand mixture occupies 1/20th part of the volume of the wall
Answer» Bricks Wall l=25 cm l=6 m =600 cm b=12.5 cm b=50 cm h=7.5 cm h=5 m =500 cm volume of wall=l x b x h =600 x 50 x 500 =15000000 cubic cm volume of mixture =1/20 x 15000000 =750000 cubic cm volume left =15000000 - 750000 =14250000 cubic cm required brick =14250000/25 x 12.5 x 7.5 =6080 bricks

find the number of bricks,each measuring 25cm×12.5cm×7.5cm,required to construct a wall 6m long,5m high and 50cm thick,while the cement and the sand mixture occupies 1/20th part of the volume of the wall

Answer»

Bricks Wall

l=25 cm l=6 m =600 cm

b=12.5 cm b=50 cm

h=7.5 cm h=5 m =500 cm

volume of wall=l x b x h

=600 x 50 x 500

=15000000 cubic cm

volume of mixture =1/20 x 15000000

=750000 cubic cm

volume left =15000000 - 750000

=14250000 cubic cm

required brick =14250000/25 x 12.5 x 7.5

=6080 bricks