Question

hlo math genius plz help no spam !!! (*°*°)
the area of a rectangle field 1800 m2 .If the ratio of length and breadth is 5:4, find itz perimeter​

Answer 1

Let

• Length=5x
• Breadth=4x

ATQ

$\\ \sf{:}\longrightarrow Area=1800$

$\\ \sf{:}\longrightarrow Length(Breadth)=1800$

$\\ \sf{:}\longrightarrow 5x(4x)=1800$

$\\ \sf{:}\longrightarrow 20x^2=1800$

$\\ \sf{:}\longrightarrow x^2=900$

$\\ \sf{:}\longrightarrow x=30$

• Length=L=5(30)=150m
• Breadth=B=4(30)=120m

$\\ \sf{:}\longrightarrow Perimeter=2(L+B)$

$\\ \sf{:}\longrightarrow Perimeter=2(150+120)$

$\\ \sf{:}\longrightarrow Perimeter=2(270)$

$\\ \sf{:}\longrightarrow Perimeter=540m$