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

187 paving stones are needed

Explanation:

Given

Paving stone

`Length = 1m; Width = 80cm`

Compound

`Length = 13.6cm; Width = 11m`

Required

Number of wires to cover the compound

Area is calculated as:

`Area = Length * Width`

For the paving stone, we have:

`A_1 =1m * 80cm`

Convert cm to m

`A_1 =1m * 0.80m`

`A_1 =0.8m^2`

For the compound, we have:

`A_2 = 13.6m * 11m`

`A_2 = 149.6m^2`

Divide the area of the compound by the area of the paving stone

`n = (A_2)/(A_1)`

`n = (149.6)/(0.8)`

`n = 187`