The sides of a triangle are 56cm, 60cm, 52cm long. The area of the triangle is
a)1322cm^2
b)1311cm^2
c)1344cm^2
d)1392cm^2
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Answer:
area of triangle=√s(s-a)(s-b)(s-c)
where s=semiperimeter
a,b,c are sides length
to know semi perimeter the formula is a+b+c whole by 2
56+60+52/2=168/2=84
area of triangle=√84(84-56)(84-60)(84-52)
√84(28)(24)(32)
√1806336=1344cm^2
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