Question

Find The length of the side and
perimeter of an equilateral triangle
whose height is '3 cm​

Answer 1

Answer:

I didn't know sorry please

Answer 2

Answer:

Since , ΔABC is an equilateral triangle ,CD is the perpendicular bisector of AB

Now. According to pythagoras theorem ,

In△ACD

AC

2

=AD

2

+CD

2

⇒(2a)

2

=a

2

+(

3

)

2

⇒4a

2

−a

2

=3

⇒3a

2

=3

⇒a

2

=1

⇒a=

1

=1cm

Hence , the length of the side of an equilateral triangle is 2 cm.

Now, Perimeter of the triangle =(2+2+2)cm

=6cm

Hence perimeter of an equilateral triangle is 6 cm

solution