Question

Aflati lungimea laturii unui patrat cu aria de :a) 361cm² b) 5,76cm² c) 9,61cm². Cu rezorvare, va rog!!!

Answer 1

a)
$arie \: patrat \: = l \times l = l {}^{2} \\ arie = 361 \: cm {}^{2} \\ l = \sqrt{361} = 19 cm$
b)
$arie = 5.76 \: cm {}^{2} \\ l = \sqrt{5.76} = 2.4 \: cm$
c)
$arie = 9.61 \: cm {}^{2} \\ l = \sqrt{9.61 } = 3.1 \: cm$