The data is displayed on the chart,

S radix = 1/2*5*4= 10

sδPBC = 1/2 * 5 * 4 = 10

sδPAB = 1/2 * 5 * 4 = 10

sδPAC = 1/2 * 2√5 * 6 = 6√5

Addition: 30+6√5? Answer b

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