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Keliling = 2 × ( 14 + 5 + 10 + 8 )
= 2 × 37
= 74 Cm
Luas Bangun = Luas Trapesium + Luas Persegi Panjang
= (
= (
= (
= (
= ( 15 × 9,8 ) + 40
= 147 + 40
= 187 Cm²
t Segitiga harus Dicari dari rumus phytagoras yaitu :
t² = sisi miring ² - alas ²
t² = 14² - 10²
t² = 196 - 100
t² = 96
t =
= 9,8 Cm ( 9,8 ² = 96,04 --> 96 )
= 9,8 Cm