Question

perimeter of an equilateral triangle with side length 9 m is equal to:​

Answer 1

Answer:

27m

Step-by-step explanation:

Perimeter of an equilateral triangle = 3× side = 9×3= 27m

Answer 2

$\sf{\huge{\underline{\orange{Given :-}}}}$

• An equilateral triangle with side length 9m .

$\sf{\huge{\underline{To\:Find :-}}}$

• The perimeter of triangle .

$\sf{\huge{\underline{\green{Answer :-}}}}$

We know,

The Perimeter of an equilateral triangle = 3a

➝ 3 × 9

➝ 27 m

$\setlength{\unitlength}{1 cm}\begin{picture}(0,0)\thicklines\qbezier(1, 0)(1,0)(3,3)\qbezier(5,0)(5,0)(3,3)\qbezier(5,0)(1,0)(1,0)\put(2.85,3.2){ \bf A }\put(0.5,-0.3){ \bf C }\put(5.2,-0.3){ \bf B }\end{picture}$

• An equilateral triangle is a triangle having each angle 60°.

• All sides are equal in an equilateral triangle.

• It is a form of a regular polygon.

• It's area is 3a²/4.

• If we bisect an equilateral triangle from center it becomes two right triangles.

_____________________________________