kak tolong jawab 4 soal ini

1. 16 + 20 + 15 +9 = 60cm
2. 32-23=9 (pythagoras 3.4.5)
9 12 15 (BC= 15)
3.PO= 12cm (pythagoras 9.12.15)
PQ = PS =15cm
jadi 70 - (15×2) :2
= (70 - 30) :2
= 40 :2
= 20
maka d1 = 12+12 = 24 & d2 = 16 + 9 = 25
luas layang-layang = 1/2 × 24 × 25 = 300cm2
4. pythagoras 9.12.13
maka panjang AC=9cm