Question

Find the area of the regular polygon. Round your answer to the nearest tenth.

A:
10.0 in^2

B:
6.9 in^2

C:
16.9 in^2

D:
13.7 in^2

Answer 1

By Pythagoras Theorem,
Height of Triangle = (1.7^2-1^2)^0.5 = (1.89)^0.5= 1.37 in
Area of one triangle = 1.374772708* 2*0.5= 1.374772708in^2
area of polygon = 5*1.374772708in^2=6.87in^2 = 6.9in^2
answer is b