Question

Ayokk kak di bantu, setaunya kakak aja gpp kok

Answer 1

Jawab:

Penjelasan dengan langkah-langkah:

Answer 2

51. A2 = B4

4x+46=5x+25

21 = x

maka, B4 = A4= 5x+25 = 5(21)+25=130

A1 + A4 = 180

A1 + 130 = 180

A1 = 50

52. tan C = tan C

de / sa = de / sa

4/3 = AB/12

12 x 4 = 3 AB

48 /3 = AB

16 = AB

53. luas yg diarsir:

(3 - 180/360) x phi x r x r

= 2,5 x phi x r x r

= 2,5 x 3,14 x 10 x 10

= 785

54. A+B+C = 180

8x+9x+7x=180

24x=180

x=7,5

A=8x = 8 . 7,5 = 60

55.E : F = 90 : 120 = 3 : 4 = G : H

G : E = 36 : 90 = 2 : 5 = H : F

G : H : F

6 : 8 : 20

36 : 48 : 120

maka H = 48

56. alas/alas = tinggi/tinggi

x /3x = t1 / t2

luas =

ABE : ACD

1/2 a t : 1/2 a t

1/2. x .t1 = 1/2 3x t2

1/2 .t1 = 1/2. 3 . 1/3 t1

1/2 = 3/6

1 = 3

57. jarak = keliling ling x 10

= phi x d x 10

= 22/7 x 14 x 10

= 440 cm

= 4,4 m