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

do you mean add both of the equations together

because if you do the answer is 10x-5

step-by-step explanation:

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)