A dinner platter is in the shape of a regular decagon the platter has an area of 161 in.² and a side length of 4.6 inches what's the area of each triangle and what is the height of each triangle

Number of sides = 10

Side length = 4.6 (or in this case base)

161 sq inches / 10 = 16.1 area of triangle.

Area of triangle = (b ase * height) / 2

16.1 = (4.6*h) / 2

multiply 16.1 by 2 (cancels the dividing the 2)

32.2=4.6*h

divid 32.2 by 4.6

7 is the height of the triangle