Question

A tile measures 10 x 10 cm. How many such tiles are required to cover a wall4 m X 2.5 m.

pls answer exam in 15 mins

Answer 1

Answer:

total area = 400cm into 250cm =100000 sq cm

tile area = 10 into 10 sq cm = 100sq cm

number of tiles = 100000 ➗ 100 sq cm = 1000 tiles

Answer 2

${\large{\underline{\underline{\bf{Question:-}}}}}$

Q) A tile measures 10cm × 10cm . How many such tiles are required to cover a wall of dimensions 4m × 2.5m ?

${\large{\underline{\underline{\bf{Required\:Solution:}}}}}$

Here, we would find the area of the wall, then we would divide it by the area of a single tile so as to get the number of tiles.

Since the wall is rectangular in shape so,

• Area of rectangle = Length×Breadth .

$\mapsto \sf \: area _{wall} = 4m \times 2.5m \\ \\ \mapsto \sf \: area _{wall} = 4 \times 100cm \times 2.5 \times 100cm \\ \\ \mapsto \sf {\boxed{ \pink{\tt \: area _{wall} = 100000 \: {cm}^{2} }}}$

And,

The tile is in the shape of a square so,

• Area of square = side × side.

$\mapsto \sf \: area _{tile} = 10cm \times 10cm \\ \\ \mapsto \boxed{ \tt \pink{area _{tile} = 100 \: {cm}^{2} }}$

Now,

$\colon \rightarrow \sf \: no. \: of \: tiles = \frac{area \: of \: wall}{area \: of \: a \: tile} \\ \\ \colon \rightarrow \sf \: no. \: of \: tiles = \frac{1000 \cancel{00} \: \cancel {cm}^{2} }{ \cancel{100} \: \cancel {cm}^{2} } \\ \\ \colon \rightarrow \underline{ \boxed{ \purple{ \tt{no. \: of \: tiles = \green{ \bf{1000}}}}}}$

So,

1000 such tiles would be required to cover the wall.

Note : As, we are supposed to find the number of tiles so, it would not have any unit.

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