Question

calcule o valor de y, nos triângulos retângulos

Answer 1

$a) \\ y^2=25\times16 \\ \\ y^2=400 \\ \\ y= \sqrt{400} \\ \\ y=20 \\ \\ \\ b) \\ y^2=4\times9 \\ \\ y^2=36 \\ \\ y= \sqrt{36} \\ \\ y=6$