Question

Pls answer this for me. How many paving stones, each 1m long and 80cm wide, are needed to cover a compound 13.6m long and 11m wide?​

Answer 1

Answer: 187

Step-by-step explanation:

Given

Dimension of stone is $1\ m\times 80\ cm$

Dimension of compound $13.6\ m\times 11\ m$

Area of the stone

$\Rightarrow a=1\times 0.8=0.8\ m^2$

Area of compound

$\Rightarrow A=13.6\times 11=149.6\ m^2$

No of the stones needed is

$\Rightarrow n=\dfrac{A}{a}\\\\\Rightarrow n=\dfrac{149.6}{0.8}\\\\\Rightarrow n=187$

Thus, 187 stones are needed