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luas 1/2 lingkaran = phi×r pangkat 2= 1/2×22/7×7×7=154/2= 77
98+77= 175 cm kuadrat
semoga membantu
luas 1/2lingkaran=1/4×1/2×22/7×14cm×14cm=4.312÷56=77cm^2
luas seluruh=98cm^2+77cm^2=175cm^2