9514 1404 393
Answer:
351.48 cm²
Explanation:
Heron's formula can be used to find the area from three side lengths.
A = √(s(s -a)(s -b)(s -c)) . . . . where s=(a+b+c)/2
s = (30 +30 +26)/2 = 43
A = √(43(43-30)(43-30)(43-26)) = √(43(13)(13)(17)) = √123,539
A ≈ 351.48 . . . square centimeters