Question

how many bricks will be required to construct a wall 8 metre long and 22.5 CM thick if each brick measures 25 cm into 11.25 cm into 6​

Answer 1

Given :-

Dimensions of Wall :-

Length of wall = 8 m

Height of wall = 6 m

Width of wall = 22.5 m

Dimensions of bricks :- 25 cm x 11.25 cm x 6 cm

To Find :-

Number of bricks Solution :- Volume of one brick

= (25 x 11.25 x 6) cm3

Volume of the wall = (800 x 600 x 22.5) cm3

Number of bricks = Volume of the walls/ Volume of one brick Number of bricks

= 800 x 600 x 22.5 / 25 x 11.25 x 6

Number of bricks = 6400

Answer 2

Answer:

total surface area of cuboid ( wall ) = 2(lb+bh+hl)

= 2(8×8+8×22.5+22.5×8)

=2(64+180+180)

=2(64+360)

=2(424)

=848cm²

Therefore

the total surface area of cuboid ( brick ) = 2(lb+bh+hl)

= 2(25×11.5+11.5×6+25×6)

= 2(287.5+68+150cm)

= 2(287.5+218)

= 2(505.5cm)

=1,011cm²

then

the number of bricks = total surface area of wall divided by total surface area of bricks.

sorry bro I try but I think number is not give correctly.