Question

AFLATI DIMENSIUNILE UNUI DREPTUNGHI CU PERIMETRU DE 104 CM SI LATIME REPREZINTA PATRU NOIMI DIN LUNGIME VVVAAAA RRRRROOOOGGGG

Answer 1

$P_{dreptunghi} = L+l=104cm\\l= \frac{4}{9} *L\\ \\ L+l=104\\L+ \frac{4}{9} *L=104\\ \frac{9L}{9} + \frac{4L}{9} = 104\\ \frac{13L}{9} =104\\13L=104*9\\13L=936\\L= \frac{936}{13} \\L=72cm\\ \\l= \frac{4*72}{9} \\l= \frac{288}{9} = 32cm$