Rohan
is
Het
constructing a wall
by placing bricks
one above the other
as shown in
the
figure. How many
bricks are required
to construct a wall of
3.3 m in height, if the
height of one brick is
11 cm?
Answers
Rohan needs 138 bricks to build a wall of 3.3 m * 1 m dimension.
Step-by-step explanation:
The question is incomplete. We need two dimensions to know the size of the wall. Only height is mentioned, and length of wall is not mentioned here. Also the length of the brick is not mentioned here. We can further taken into consideration the thickness of the wall, but let's leave it here.
However, assuming the length of wall is 1 meter and length of brick is 19 cm and thickness of mortar in between is 1 cm, please find solution below.
Length of wall = 1 m
Height of wall = 3.3 m
Length of brick = 19 cm
Height of brick = 11 cm
Thickness of mortar = 1 cm
Length of one brick = 19 + 1 = 20 cm
To get a length of 1 m, we need = 100 / 20 = 5 bricks
Height of one layer of brick = 11 + 1 = 12 cm
To get a height of 3.3 m, we need = 330 / 12 = 27.5 layers.
Total number of bricks required = 27.5 * 5
= 137.5
So, Rohan needs 138 bricks to build a wall of 3.3 m * 1 m dimension.