Dibantu yaaaaaaaaaaaaaaa agar msk surga

♧ Mapel : Matematika
♧ Tingkat : SMP
♧ Campuran~
___________________________

26][ Luas daerah yg diarsir
= L. segitiga besar – L.segitiga kecil
= ( 1/2 x a x t ) – ( 1/2 x a x t )
= ( 1/2 x 12 x (5 x 3)) – ( 1/2 x 6 x 5 )
= ( 6 x 15 ) – 15cm²
= 90cm² – 15cm²
= 75cm²
Opsi (D)

27][ Rata rata kelas
= ((24 x 6,25) + 7,5) ÷ (24 + 1)
= (150 + 7,5) ÷ 25
= 157,5 ÷ 25
= 6,3
Opsi (B)

28][ Saat itu jam tersebut menunjukan pukul 10.30 karena :
= (10jam + 30menit) – (30menit x 6°)
= (10jam x 30°) + ((30/60) x 30°) – 180°
= (300° + 15°) – 180°
= 315° – 180°
= 135°
Opsi (C)

29][ Volume = 1/3 x s x s x t
400 = 1/3 x 10 x 10 x t
400 = 1/3 x 100 x t
t = 400 ÷ 1/3 ÷ 100
t = 400 x 3/1 ÷ 100
t = 1200 ÷ 100
t = 12cm
Opsi (C)

Bismillah
26. (½ x 12 x 15) – (½ x 6 x 5) =
90 – 15 =
75 cm² (pilihan D)

27. ((24 x 6,25) + 7,5)/25 =
(150 + 7,5)/25 =
157,5/25 =
6,3 (pilihan B)

28. a. 8.00 = < 135°
b. 10.10 = < 135°
c. 10.30 = 135°
d. 11.30 = > 135°
maka jawabannya C

29. ⅓ x luas alas x tinggi =
⅓ x (10 x 10) x tinggi = 400 cm³
⅓ x 100 x tinggi = 400 cm³
100 x tinggi = 400 cm³ x 3/1
100 x tinggi = 1200 cm³
tinggi = 1200 cm³ : 100
tinggi = 12 cm (pilihan C)
maaf kalau salah