tolong bantu ya kalo ada yg tau

Saya coba bantu jawab yah !

Penyelesaian :
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Soal nomor 13 :
Diket : p : l = 5 : 3 , K = 80 cm

Misalkan : p = 5x , l = 3x

Keliling = 80 cm
2 (p + l) = 80
2 (5x + 3x) = 80
2 (8x) = 80
16x = 80
x = 80/16
x = 5 cm

p = 5 (5) = 25 cm
l = 3 (5) = 15 cm

Luas persegi panjang
= p × l
= 25 × 15
= 375cm

Jawabannya = D. 375 cm

Soal.nomor 14 :
Pada pukul 03.30
= 60° + 15°
= 75°

Jawaban = C. 75°