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= (1/2xd1xd2) x 24cm
= (1/2x16cmx20cm) x 24cm
= 160cm x 24cm
= 3840cm3
2. Keliling= 4s
64cm= 4s
s= 64:4
s= 16cm
Tinggi segitiga= (16:2)kuadrat + 15cm
= 8kuadrat + 15cm
= 64cm + 225cm
= 289cm
= akar dari 289cm
= 17cm
Luas Permukaan= Luas Alas + JLSBT
= (sxs) + 2Luas Segitiga + 2Luas Segitiga
= (16x16) + 2(1/2xaxt) + 2(1/2xaxt)
= 256cm2 + (16x17) + (16x17)
= 256cm2 + 272cm2 + 272cm2
= 800cm2