Question

how many bricks needed is 24 cm long and 12.5 cm widht and 8 cm thick will be required to build a wall. 18 M long 2.5 hight and 40 cm to thick

Answer 1

length of brick = l =24cm
breath of brick = b = 12.5cm
height of brick = h = 8cm
number of bricks = n = ?

Length of wall = L = 18m=1800cm
Breath of wall= B =2.5m=250cm
Height of wall =H =40cm
n×volume of brick=Volume of Wall
n×l×b×h=L×B×H
n×24×12.5×8=1800×250×40
n×2400=18000000
n=18000000÷2400
n=7500
Hence the number of bricks required to build Wall is 7500 Bricks
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Answer 2

$\huge \tt Question:-$

ʜᴏᴡ ᴍᴀɴʏ ʙʀɪᴄᴋꜱ ᴇᴀᴄʜ 24 ᴄᴍ ʟᴏɴɢ, 12.5 ᴄᴍ ᴡɪᴅᴇ ᴀɴᴅ 8 ᴄᴍ ᴛʜɪᴄᴋ ᴡɪʟʟ ʙᴇ ʀᴇQᴜɪʀᴇᴅ ᴛᴏ ʙᴜɪʟᴅ ᴀ ᴡᴀʟʟ 18 ᴍ ʟᴏɴɢ, 2.5 ʜɪɢʜ ᴀɴᴅ 40 ᴄᴍ ᴛʜɪᴄᴋ?

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$\huge \tt To\:Find:-$

ɴᴜᴍʙᴇʀ ᴏꜰ ʙʀɪᴄᴋꜱ ʀᴇQᴜɪʀᴇᴅ

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$\huge \tt Answer:-$

ʟᴇɴɢᴛʜ ᴏꜰ ᴛʜᴇ ᴡᴀʟʟ = 18 ᴍ = 1800 ᴄᴍ

ʜᴇɪɢʜᴛ ᴏꜰ ᴛʜᴇ ᴡᴀʟʟ = 2.5 ᴍ =250 ᴄᴍ

ᴛʜɪᴄᴋɴᴇꜱꜱ ᴏꜰ ᴛʜᴇ ᴡᴀʟʟ = 40 ᴄᴍ

ᴠᴏʟᴜᴍᴇ ᴏꜰ ᴛʜᴇ ᴡᴀʟʟ = ( ʟᴇɴɢᴛʜ × ʜᴇɪɢʜᴛ × ᴛʜɪᴄᴋɴᴇꜱꜱ ) ᴄᴜʙɪᴄ ᴜɴɪᴛꜱ

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ʟᴇɴɢᴛʜ ᴏꜰ ᴀ ʙʀɪᴄᴋ = 24 ᴄᴍ

ʙʀᴇᴀᴅᴛʜ ᴏꜰ ᴀ ʙʀɪᴄᴋ = 12.5 ᴄᴍ

ᴛʜɪᴄᴋɴᴇꜱꜱ ᴏꜰ ᴀ ʙʀɪᴄᴋ =8 ᴄᴍ

ᴠᴏʟᴜᴍᴇ ᴏꜰ ᴀ ʙʀɪᴄᴋ = ( 24 × 12.5 × 8) ᴄᴜ ᴄᴍ

⇒ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏꜰ ʙʀɪᴄᴋꜱ ʀᴇQᴜɪʀᴇᴅ = ᴠᴏʟᴜᴍᴇ ᴏꜰ ᴛʜᴇ ᴡᴀʟʟ / ᴠᴏʟᴜᴍᴇ ᴏꜰ 1 ʙʀɪᴄᴋ

$\:⇒ \binom{1800 \times 250 \times 40}{24 \times 12.5 \times 8}$

$⇒ \binom{(1800 \times 250 \times 40 \times 10}{24 \times 125 \times 8} = 7500$

ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏꜰ ʙʀɪᴄᴋꜱ ʀᴇQᴜɪʀᴇᴅ ɪꜱ 7500

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$\huge \tt Additional\: information:-$

• ᴠᴏʟᴜᴍᴇ ᴏꜰ ᴀ ᴄᴜʙᴏɪᴅ = (ʟᴇɴɢᴛʜ × ʙʀᴇᴀᴅᴛʜ × ʜᴇɪɢʜᴛ)ᴄᴜʙɪᴄ ᴜɴɪᴛꜱ

• ᴠᴏʟᴜᴍᴇ ᴏꜰ ᴀ ᴄᴜʙᴇ = (ꜱɪᴅᴇ × ꜱɪᴅᴇ × ꜱɪᴅᴇ) ᴄᴜʙɪᴄ ᴜɴɪᴛS.