Find the cost of flooring a square room of side 10m with marble titles 25 cm- 20 cm at the rate Rs 7-50 per title

Area of floor =side^2=10^2=100m^2 Area of 1 tile =25100×20100=120m^2 ⇒ Number of tiles required =100(120)=2000 ⇒ Cost =7.5 ...

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Standard VIII

Mathematics

Circle Mensuration

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Question

Find the cost of flooring a square room of side $10 m$ with marble titles $25 c m \times 20 c m$ at the rate $R s 7.50$ per title

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Solution

Area of floor $= s i d e^{2} = 10^{2} = 100 m^{2}$
Area of $1$ tile $= \frac{25}{100} \times \frac{20}{100} = \frac{1}{20} m^{2}$
$\Rightarrow$ Number of tiles required $= \frac{100}{(\frac{1}{20})} = 2000$
$\Rightarrow$ Cost $= 7.5 \times 2000 =$ Rs. $15000$ .

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Find the cost of flooring a square room of side 10m with marble titles 25cm×20cm at the rate Rs7.50 per title

Area of floor =side2=102=100m2Area of 1 tile =25100×20100=120m2⇒ Number of tiles required =100(120)=2000⇒ Cost =7.5×2000=Rs. 15000.

Find the cost of flooring a square room of side $10 m$ with marble titles $25 c m \times 20 c m$ at the rate $R s 7.50$ per title

Area of floor $= s i d e^{2} = 10^{2} = 100 m^{2}$
Area of $1$ tile $= \frac{25}{100} \times \frac{20}{100} = \frac{1}{20} m^{2}$
$\Rightarrow$ Number of tiles required $= \frac{100}{(\frac{1}{20})} = 2000$
$\Rightarrow$ Cost $= 7.5 \times 2000 =$ Rs. $15000$ .