Question

A wall is 22 m long, 90 cm wide and 8 m high. How many bricks are needed to
construct this wall ifone brick is 15 cm long, 12 cm wide and 8 cm high ?​

Answer 1

Step-by-step explanation:

Volume of Wall = l × b × h

= ( 22 × 100 )cm × 90 cm × ( 8 × 100 ) cm

= ( 2200 × 90 × 800 ) cm

= 158400000 cm

Volume of Brick = l × b × h

= 15 cm × 12 cm × 8 cm

= 1440 cm

Total Number of Bricks required to make wall = Volume of wall ÷ Volume of Brick

= 158400000 ÷ 1440

= 110000 cm ( Ans )

Therefore 110000 Bricks is needed to construct the wall .

Answer 2

Step-by-step explanation:

$\huge {\underbrace {\underline{\mathfrak {\orange {Answer}}}}}$

$</p><p>Here .....♡\\</p><p>wall's \:length=22m.\\</p><p> breath=90cm.\\</p><p>height =8m.\\</p><p>so......\\ \:$

${\underline {\mathtt {\red{volume \:of\:wall}}}}$

$=l×b×h\\</p><p>=[{ (22×100)×90×(8×100)]}cm.\\</p><p>=(2200×90×800)cm.\\</p><p>=158400000\:cm.\\</p><p>\: \\</p><p>\:\\</p><p>\:\\</p><p>\:\\</p><p>\:\\</p><p>\:\\</p><p>\:\\</p><p>so.....♡♡\\</p><p>in \:bricks \:length =15cm.\\</p><p></p><p>breath =12cm. \\</p><p>height =8cm.</p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p>$

${\underbrace {\mathtt{\purple {volume \:of\:brick}}}}$

$=l×b×h\\</p><p>=15cm.×12cm.×8cm.\\</p><p>=(15×12×8)cm.\\</p><p>=1440cm.\\</p><p>\:\\</p><p>\:\\</p><p>\:\\</p><p>Total \:number\: of\: bricks \\required\: to \:make \:wall\\</p><p>\:\\</p><p>=\frac {volume \:of \:wall}{volume \:of \:bricks }\\</p><p>\:\\</p><p>=\frac {158400000\:cm.}{1440\:cm.}\\</p><p>\:\\</p><p>\:\\</p><p>=110000\:pieces ♡♡♡\\</p><p></p><p>\:\\</p><p></p><p>\:\\</p><p>\:\\</p><p></p><p>\:\\</p><p></p><p>\:\\</p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p>so.......\\</p><p>110000 \:pieces \:bricks \\</p><p>is\: needed \:to\\</p><p>construct \:the\: wall$