Question

Could someone please explain how to get the answer of the one that has an x on it!

Answer 1

A = 84.3

Explanation:

Given the formula for the Pentagon:

1/4√5(5+2√5)a^2

The first step is to simplify the expression.

`\frac{49\sqrt{25+10√(5)}}{4}`

The second step is to convert it to a decimal form.

84.30339262

The last step is to round 84.30339262.

84.3

I hope this helped!

Answer 2

for second one

2.01m² is your answer