Observe the picture and answer the questions — task. Mathematics State Board, Class 10.

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$ABC$ and

$ADE$ are two similar triangles.

1. The perimeter of two similar triangles,

$ABC$ and

$ADE$ , are 40

$kms$ and 24

$kms$ . If one side of

$\triangle ABC$ is 6

$km$ , then the corresponding side of

$\triangle ADE$ is

$kms$ .

2. If

$\angle ADE = 57^{\circ}$ and

$\angle C = 70^{\circ}$ , then the measure of

$\angle A$ is

$52^{°}$
$53^{°}$
$51^{°}$
$55^{°}$

$1$

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