Question

please solve this question​

Answer 1

Answer

we know that,

$\boxed{ \bold{volume \: of \: cuboid = lbh}}$

here it is given that,

• length of the brick = 20 cm
• breadth of the brick = 10 cm
• height of the brick = 3.5 cm

$\bold{ : \implies 20 \times 10 \times 3.5} \\ \\ \bold{: \implies 700 \: {cm}^{3} } \: \: \: \: \: \: \: \: \:$

so, volume of each brick is 700 cm³

now,

• length of the wall = 25m = 2500 cm
• breadth of the wall = 2m = 200 cm
• height of the wall = 0.35m = 35 cm

$\bold{: \implies 2500 \times 200 \times 35 } \\ \\ \bold{: \implies 17500000 \: {cm}^{3} } \: \: \:$

so, volume of the wall is 17500000 cm³

now,

$\underline{ \boxed{ \bold{no. \: of \: bricks = \frac{volume \: of \:the \: wall}{volume \: of \: each \: brick} }}}$

$\implies \bold{ \cancel \frac{17500000}{700} \: \:} \: \: \: \: \\ \\ \bold{ \implies25000 \: bricks }$

hence, 25000 bricks are required for making the wall

Answer 2

Answer:

the upper answer is correct dear