tolong ya nomor 25 sama 26 .. menggunakan cara! terima Kasih banyak ya sudah menjawab...

•25

<DAC = <DCA = 35°
<ADC = 180° - <DAC - <DCA
= 180° - 35° - 35°
= 110°

<BDC = <DBC = 180°-<ADC
= 180°-110°
=70°

<BCD = 180° - <BDC - <DBC
= 180° -70°-70°
= 40°

<BCA = <DCA+<BCD
= 35°+40°
=75°


•26

L = a x t x ½
288 cm² = a x 18 cm x ½
288 cm² = a x 9 cm
a = 288 cm²÷9 cm
a = 32 cm

CF= ✓32²-18²
CF = ✓1024-324
CF = ✓700
CF = 26,45 cm

AD = CF x 2
AD = 26,45 x 2
AD = 52,9 cm = 53 cm

DE = ✓---

Maaf yang no. 26 nya ga bisa bantu :"