Question

what is the formula of

area of triangle​

Answer 1

ʜᴇʏᴀ ᴍᴀᴛᴇ ʜᴇʀᴇ ɪs ʏᴏᴜʀ ᴀɴsᴡᴇʀ 
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●Equilateral triangle:-

1/2×base×height

●Scalene triangle

$\sqrt{s(s - a)(s - b)(s - c)}$
Where, a, b, c are sides of the triangle.

●For finding area via coordinate geometry:-

1/2[x1(y1-y2)+x2(y2-y3)+x3(y1-y2)]

Answer 2

when an area of a triangle and its altitude is given then

Area of triangle = 1/2 base x height