Matematika Sekolah Dasar [tex]Q. Math... #1[/tex]SOAL TERLAMPIR DI ATAS ✔️INGAT PAKE CARA YA ✔️NO NGASAL ❌NO BAHASA ALIEN ❌​

destanyandersonulv – May 11, 2023

[tex]Q. Math... #1[/tex]


SOAL TERLAMPIR DI ATAS ✔️
INGAT PAKE CARA YA ✔️


NO NGASAL ❌
NO BAHASA ALIEN ❌​

SOAL 1

___________________________________________

a.

AB = CD

3x - 5 = 2x + 7

3x - 2x - 5 = 7

x - 5 = 7

x = 7 + 5

x = 12

___________________________________________

b.

AB

= 3x - 5

= 3(12) - 5

= 36 - 5

= 31 cm

[tex] \\ [/tex]

CD

= 2x + 7

= 2(12) + 7

= 24 + 7

= 31 cm

___________________________________________

L = A × T

L = 31 × 6

L = 186 cm²

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Penjelasan dengan langkah-langkah:

JAJAR GENJANG berbalut SPLSV

AB = (3x – 5) cm

CD = (2x + 7) cm

t = 6 cm

a. AB // CD

AB = CD

3x – 5 = 2x + 7

3x – 2x = 5 + 7

x = 12

b. AB = 3×12 – 5 = 31 cm

CD = 2×12 + 7 = 31 cm

c. Luas = AB × t

Luas = 31 × 6

Luas = 186 cm² ✔

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