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
A.
21.2 in2
B.
42.4 in2
C.
17.3 in2
D.
none of these

Answer 1

@Hero

Answer 2

any idea

Answer 3

@gitahimart

Answer 4

do you know heron's formulae?

Answer 5

nope

Answer 6

given sides a,b,c then area
=\[\sqrt{s(s-a)(s-b)(s-c)}\]
where s = (a+b+c)/2
try it