A home has 3 stairs leading to its front door with each stair having a vertical height of 10 inches and a horizontal tread length of 18 inches. When a new refrigerator is delivered to the home, the delivery people lay down a wooden plank over the stairs so that they can roll the refrigerator up the plank.

What angle, to the nearest degree, does the wooden plank form with the ground?

29*

61*

Question

A home has 3 stairs leading to its front door with each stair having a vertical height of 10 inches and a horizontal tread length of 18 inches. When a new refrigerator is delivered to the home, the delivery people lay down a wooden plank over the stairs so that they can roll the refrigerator up the plank.

What angle, to the nearest degree, does the wooden plank form with the ground?

29*

61*

anonymous · Answer

https://clackamasweb.owschools.com/media/g_geo_ccss_2014/11/plank_on_stairs.gif