Answer:
1344cm^2
Explanation:
Semi perimeter:
S = (a+b+c)/2
S=(56+60+52)/2
S=168/2
S=84
Area:
A=root S(S-56)(S-60)(S-52)
A=root 84(84-56)(84-60)(84-52)
A=root 84(28*24*32)
A=root 84(21504)
A=root1806336
A=1344cm^2
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