Jawaban:
Panjang AB = 8 cm
Panjang BC = 6 cm
Panjang AD = 26 cm
a) Panjang AC
AC = √AB² + BC
AC = √8² + 6²
AC = √64 + 36
AC = √100
AC = 10 cm
b) Panjang CD
CD = √AD² – AC
CD = √26² – 10²
CD = √676 – 100
CD = √576
CD = 24 cm
c) Luas bangun ABCD
L = 1/2 × (L. ABC + L. ACD)
= 1/2 × ((8 × 6) + (10 × 24))
= 1/2 × (48 + 240)
= 1/2 × 288
= 144 cm²
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Jawaban:
Panjang AB = 8 cm
Panjang BC = 6 cm
Panjang AD = 26 cm
a) Panjang AC
AC = √AB² + BC
AC = √8² + 6²
AC = √64 + 36
AC = √100
AC = 10 cm
b) Panjang CD
CD = √AD² – AC
CD = √26² – 10²
CD = √676 – 100
CD = √576
CD = 24 cm
c) Luas bangun ABCD
L = 1/2 × (L. ABC + L. ACD)
= 1/2 × ((8 × 6) + (10 × 24))
= 1/2 × (48 + 240)
= 1/2 × 288
= 144 cm²