Question

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

Answer 1

C

Answer 2

agree, C.

Answer 3

\[\huge A=\frac{1}{2}Pa\]
P=perimeter , a=apothem
\[\huge A=\frac{1}{2}(2(5))\frac{3\sqrt{21}}{10}=6.87\]

Answer 4

there are 5 small triangle with same area. Consider the small triangle, take 2 as the base, the height = sq root (1.7^2 - 1^2) =1.374772708
area of each small triangle = 1/2 x 2x 1.374772708 = 1.374772708
total area of the polygon = 5 x 1.374772708 = 6.9 that is C

Answer 5

DIVIDE POLYGON IN 5 EQUILATERAL TRIANGLES AND USE THIS FORMULA
(5* ROOT3 * (SIDE)^2)/5
WHERE SIDE IS MEASURE OF SIDE OF AN EQUILATERAL TRIANGLE