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

Explanation:

Given

Dimension of stone is
`1\ m* 80\ cm`

Dimension of compound
`13.6\ m* 11\ m`

Area of the stone

`\Rightarrow a=1* 0.8=0.8\ m^2`

Area of compound

`\Rightarrow A=13.6* 11=149.6\ m^2`

No of the stones needed is

`\Rightarrow n=(A)/(a)\\\\\Rightarrow n=(149.6)/(0.8)\\\\\Rightarrow n=187`

Thus, 187 stones are needed