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= √BC²-AB²
= √10² - 6²
= √100 - 36
= √64
= 8
c. pjg AD
1/2 x AB x AC = 1/2 x BC x AD
6 x 8 = 10 x AD
48 = 10 AD
4,8 = AD
b. pjg BD
= pjg BC - pjg DC
= 10 - (√AC² - AD²)
= 10 - (√8² - 4,8²)
= 10 - (√64 - 23.04)
= 10 - (√40.96)
= 10 - 6,4
= 3,6