If a = 2 cm and r = 3.4 cm, find the area of the regular pentagon.
round the answer to one decimal place.
area =
cm

Step-by-step explanation:

Assume a pentagon has equal length where a be the side of the pentagon and r be the apothem of the pentagon.

Given:

Sides of pentagon

apothem of pentagon

The area of the pentagon formula is given below.

Where b = length of the base or side

And h = height of apothem

Now, we substitute side and apothem length in above formula.

Therefore, the area of the pentagon is

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

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step-by-step explanation:

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