Question

Afla in metri dimensiunile unei gradinite cu flori in forma dreptunghiulara cu perimetrul 144m stiind ca latimea este o treime din lungime

Answer 1

$A=?$

$P= 144m$

$P= 2(L+l)$

$l= \frac{1}{3} *L = \frac{L}{3}$

$144 m = 2(L+\frac{L}{3})$

$\frac{144m}{2} = \frac{3L}{3}+\frac{L}{3}$

$72m = \frac{4L}{3}$

$4L= 72*3m$

$4L= 216m$

$L=\frac{216}{4}= 54 m$

$l=\frac{L}{3} = \frac{54m}{3}=18 m$

$A= L*l = 54m *18m= 972m^2$