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Question Number 76585 by Crabby89p13 last updated on 28/Dec/19

Commented by john santu last updated on 28/Dec/19

ratio blue area to red = 1 : 1

$${ratio}\:{blue}\:{area}\:{to}\:{red}\:=\:\mathrm{1}\::\:\mathrm{1} \\ $$

Answered by john santu last updated on 28/Dec/19

let radius = r. blue area = 4r^2 (4−π)

$${let}\:{radius}\:=\:{r}.\:{blue}\:{area}\:=\:\mathrm{4}{r}^{\mathrm{2}} \left(\mathrm{4}−\pi\right) \\ $$

Answered by JDamian last updated on 28/Dec/19

red area = 5r^2 (4−π) ... then

$${red}\:{area}\:=\:\mathrm{5}{r}^{\mathrm{2}} \left(\mathrm{4}−\pi\right)\:...\:{then} \\ $$

Answered by john santu last updated on 28/Dec/19

red area = 4r^2 (4−π)

$${red}\:{area}\:=\:\mathrm{4}{r}^{\mathrm{2}} \left(\mathrm{4}−\pi\right) \\ $$

Answered by mr W last updated on 28/Dec/19

blue area =16 └  red area = 20 └  ((blue)/(red))=((16)/(20))=(4/5)

$${blue}\:{area}\:=\mathrm{16}\:\llcorner \\ $$$${red}\:{area}\:=\:\mathrm{20}\:\llcorner \\ $$$$\frac{{blue}}{{red}}=\frac{\mathrm{16}}{\mathrm{20}}=\frac{\mathrm{4}}{\mathrm{5}} \\ $$

Commented by benjo 1/2 santuyy last updated on 28/Dec/19

what is ⌊

$${what}\:{is}\:\lfloor \\ $$

Commented by JDamian last updated on 28/Dec/19

it stands for any coloured corner of small  squares having a circle inscribed.

$${it}\:{stands}\:{for}\:{any}\:{coloured}\:{corner}\:{of}\:{small} \\ $$$${squares}\:{having}\:{a}\:{circle}\:{inscribed}. \\ $$

Commented by mr W last updated on 28/Dec/19

Commented by Crabby89p13 last updated on 30/Dec/19

((blue)/(red))=((16)/(20))=(4/5)    vhjmm64

$$\frac{{blue}}{{red}}=\frac{\mathrm{16}}{\mathrm{20}}=\frac{\mathrm{4}}{\mathrm{5}} \\ $$$$ \\ $$$${vhjmm}\mathrm{64} \\ $$$$ \\ $$$$ \\ $$

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