Jawab:
Penjelasan dengan langkah-langkah:
DE = √(6² + 8²)
DE = √(36 + 64)
DE = √(100)
DE = 10 cm
CD = 25 - 8
CE = 17 cm
Keliling
= 10 + 10 + 10 + 25 + 15 + 17
= 87 cm
Luas gabungan
= Luas layang-layang + luas trapesium
= 1/2 x d1 x d2 + 1/2 x t x (a + b)
= 1/2 x (8 + 8) x (6 + 15) + 1/2 x 15 x (17 + 25)
= 1/2 x 16 x 21 + 1/2 x 15 x 42
= 168 + 315
= 483 cm²
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Jawab:
Penjelasan dengan langkah-langkah:
DE = √(6² + 8²)
DE = √(36 + 64)
DE = √(100)
DE = 10 cm
CD = 25 - 8
CE = 17 cm
Keliling
= 10 + 10 + 10 + 25 + 15 + 17
= 87 cm
Luas gabungan
= Luas layang-layang + luas trapesium
= 1/2 x d1 x d2 + 1/2 x t x (a + b)
= 1/2 x (8 + 8) x (6 + 15) + 1/2 x 15 x (17 + 25)
= 1/2 x 16 x 21 + 1/2 x 15 x 42
= 168 + 315
= 483 cm²