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Verified answer
14). 3/4L.lingkaran + L.segitiga3/4.πr²+1/2s²
3/4×22/7×14×14 + 1/2×12×12
462+98 = 560cm²
15). L.lingkaran - L.layang²
πr²-1/2(d1×d2)
22/7×14×14-1/2(28×14)
616-196=420cm²