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maka:1/2 .a.t
1/2 .58,6756=
29,3378cm
:)
kalau segitiga sama sisi kan pasti sama semua sisinya jadi .kll ÷ 3 = 23 ÷ 3 = 7,7cm
berarti luasnya a × t ÷ 2 = 7,7 × 7,7 ÷ 2 = 29,65