Find the area of a triangle if s-a =7 cm , s – b = 8 cm and s – c = 21 cm where
a,b and c are three sides and s is semi perimeter of triangle.
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Answer:
Step-by-step explanation:
given,
the difference between semi perimeter (s) and sides of a triangle are 8,7, and 5
which means
(s-a) =8
(s-b) = 7
(s-c) = 5
where a,b,c are the length of the sides of the triangle ABC
area of triangle formula
=
=
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