Question

For a poster competition, students were provided equilateral triangular shaped drawing sheets. If the perimeter of the sheet is 90 cm, find the area of the drawing sheet, using Heron’s formula.

Answer 1

Answer:

area of sheet is 90

Step-by-step explanation:

how let me explain

as we have equilateral triangle so we know it's all sides are same so perimeter is 90 so perimeter of triangle is sum of three sides so we divide 90 by 3 and it is 30

so 30 is one side

so we know side is 30

so formula of area of triangle

is 30×3

so it's 90 so now you have answer is 30

hope it helped

Answer 2

Answer:

it's is 225√3

Step-by-step explanation:

all sides are equal so,

a+a+a=90

3a=90

a=30

now area is equal to 225√3