Question

Calcula las dimensiones del rectángulo cuya area es de 30m² y su perímetro de 22

Answer 1

A × B = 30 m²

2A + 2B = 22


2A + 2B = 22
A + B = 11
A = 11 - B

AB = 30
B(11 - B) = 30
11B - B² = 30
B² - 11B + 30 = 0
(B-6)(B-5) = 0
B = 6 o B = 5

A = 11 - B
A = 11 - 6
A = 5

A = 11 - B
A = 11 - 5
A = 6

entonces
A = 5 y B = 6
ó
A = 6 y B = 5