An equilateral triangle is shown.
Perimeter = 36 cm

Heron’s formula: Area = StartRoot s (s minus a) (s minus b) (s minus c) EndRoot

What is the area of an equilateral triangle that has a perimeter of 36 centimeters? Round to the nearest square centimeter.

15 square centimeters
25 square centimeters
62 square centimeters
72 square centimeters

62 cm^2

Step-by-step explanation:

An equilateral triangle is shown.

Perimeter = 36 cm

Heron’s formula: Area = StartRoot s (s minus a) (s minus b) (s minus c) EndRoot

What is the area of an equilateral triangle that has a perimeter of 36 centimeters? Round to the nearest square centimeter.

15 square centimeters

25 square centimeters

62 square centimeters

72 square centimeters

this is answer of 144 cubic meters

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58