Question

The area of an equilateral triangle is 81V3cmits height is
a) 9V3cm b) 6V3cm c) 18V3cm d) 9 cm​

Answer 1

Answer:

a) 9V3cm

Step-by-step explanation:

Hi friend

--------------

Your answer

--------------------

Area of an equilateral triangle = 81√3 cm²

Now,

--------

Let the sides be a .

Then,

----------

√3/4 × a² = 81√3

=> a² = (81√3 × 4)/√3

=> a² = 324

=> a = √324

=> a = 18 cm

Then,

-----------

Height = √3/2 × a = (√3/2 × 18) cm = 9√3 cm

HOPE IT HELPS

mark..me..brainliest...

Answer 2

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a) 9V3cm

Step-by-step explanation:

--------------

Your answer

--------------------

Area of an equilateral triangle = 81√3 cm²

Now,

--------

Let the sides be a .

Then,

----------

√3/4 × a² = 81√3

=> a² = (81√3 × 4)/√3

=> a² = 324

=> a = √324

=> a = 18 cm

Then,

-----------

Height = √3/2 × a = (√3/2 × 18) cm = 9√3 cm

HOPE IT HELPS

mark..me..brainliest...