Question

Conjuguez les verbes en parenthèses

ils (avoir) quel âge?

​

Answer 1

Answer:

I don't know the answer.

Answer 2

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎As per the analysis, we need to find the number of tiles required to pave the floor of the hall. How can we find it? We can find it using the topic - "Area of a rectangle and area of a square".

To find the required answer, we've to first find the area of the floor and the area of a tile. And then, we have to divide the area of floor by area of a tile, which is the required answer.

Before finding the areas, check whether the units of the measures of both the figures are same! Here, it isn't same. So, we have to convert the units from "metres" to "centimetres".

As we know, $\boxed{ \sf{1 \: m = 100 \: cm}}$,

$\\ \longmapsto{ \sf{25 \: m \: (length) = 25 \times 100 = 2500 \: cm}} \\ \\ \longmapsto{ \sf{18 \: m \: (breadth) = 18 \times 100 = 1800 \: cm}}$

Now, let's find the area of the floor –

$\longmapsto{ \sf{ \pmb{Area \: _{(rectangle)} = lb \: sq.units}}} \\ \\ \sf{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2500 \times 1800} \\ \\ \sf{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \underline{4500000 \: {cm}^{2}} }$

Finding the area of a tile –

$\longmapsto{ \sf{ \pmb{Area \: _{(square)} = {(s)}^{2} \: sq.units}}} \\ \\ \sf{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = {(25)}^{2} } \\ \\ \sf{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \underline{625 \: {cm}^{2}} }$

Finally, let's find the number of tiles required by substituting the obtained measures in:

$\longmapsto{ \sf{ \dfrac{Area \: of \: floor \: of \: the \: hall}{Area \: of \: a \: tile} }} \\ \\ \longmapsto{ \sf{ \dfrac{ \cancel{4500000}}{ \cancel{625}}}} \\ \\ \longmapsto \underline{\boxed{ \tt{ \pmb{ \red{7200}}}}}$

$\\ \therefore \underline{ \sf{ \pmb{ \red{7200 \: tiles} \: are \: required \: to \: pave \: the \: floor .}}}$

_________________________________________