Question

A piece of art is in the shape of an equilateral triangle with sides of 7 in. Find the area of the piece of art. Round your answer to the nearest tenth.

Answer 1

the formula that is used is
`A= ( √(3) )/(4) a^2`

a=length of a side.
`7^2=49`


[tex]\frac{ \sqrt{3} }{4}*49=21.2[tex]