Question

Calculate the area of the equilateral triangle using the formula for area of a regular polygon, and compare it to Bianca’s answer. The apothem, rounded to the nearest tenth, is units. The perimeter of the equilateral triangle is units. Therefore, the area of the equilateral triangle is , or approximately 43. 5 units2. The calculated areas are.

Answer 1

The calculated areas of both are the same instead of using the different formulas that are 43. 5 squared unit.

What is the area of a regular polygon?

The area of the polygon is the product of half of the apothem of the triangle and perimeter.

The area of the polygon = $\frac{1}{2} \times h \times p$

The side of the triangle is 10 units.

Apothem of an equilateral triangle

$s = \frac{\sqrt{3} a}{6}$

s= $\sqrt{3} \times 10/6$

s = 2.88

Here, a is the side of the triangle.

Thus the apothem of the triangle is 2.9 units.

The perimeter of the equilateral triangle is equal to the three times the sides.

Perimeter of the equilateral triangle ,

P = 3(10)

P = 30

Therefore, the perimeter of the equilateral triangle is 30 units.

The area of the equilateral triangle-

The area of the polygon = $\frac{1}{2} \times h \times p$

A = $1/2 \times 2.9 \times 30$

A = 43.5

Thus the area of the equilateral triangle is 43.5 squared units.

Therefore, The calculated areas of both are the same instead of using the different formulas.

Learn more about the apothem;

brainly.com/question/10580427

Answer 2

Answer:

(A) 2.9

(C)30

(A)1/2(2.9)(30)

(D)The same despite using different formulas

Step-by-step explanation:

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