Question

Assuming that the pentagon is regular, what is the area of the shaded region below? Use your calculator and round your final answer to the nearest hundredth.

Answer 1

shaded region?

Answer 2

Area of pentagon - area of square

Answer 3

and then what do i do?

Answer 4

regular pentagon means all sides are equal
\[area = \frac{ 1 }{ 4 }\sqrt{5(5+2\sqrt{5})}* side^2\]

Answer 5

side = 9

Answer 6

so the answer is 58.36 ?

Answer 7

Correct. :)