Find the sum of the angles in the polygon.
(a)90°
(b)180°
(c)360°
(d)720°

The correct option is (C) 360°

Therefore sum of the angles in the required polygon is 360°.

Step-by-step explanation:

Given:

Polygon is a Square Shape having Four Sides

And also it is called as Quadrilateral having each angle as 90°.

For a Square Quadrilateral:

Sum of the Angles of a square Quadrilateral is 360°

Therefore sum of the angles in the required polygon is 360°.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m