Question

If the area of each triangle is 14.5 square inches, then what is the area of the regular decagon? show work if can.

Answer 1

there are 8 triangles in a decagon so if u multiply 14.5*8=116 ?

Answer 2

thank you!! (:

Answer 3

my pleasure!

Answer 4

@mr_preet >regular decagon
@deena123

There are ten sides for a decagon.

No diagram was given but I think your answer will be 10 times 14.5 = 145 square units

and not > 14.5*8=116 as stated above.

Answer 5

but the number of triangles in a decagon are 8

Answer 6

and also no diagram is need it is a formula for calculating the triangles like for n sided polygon there are (n-2) triangles!!