Jawab:
a. 48 cm
b. 37 cm
c. 1.776 cm²
Penjelasan dengan langkah-langkah:
Diketahui:
Panjang = (5x - 2) cm
Lebar = (4x - 3) cm
Keliling = 170 cm
Maka:
Keliling = 2 (panjang + lebar)
170 = 2(5x - 2 + 4x - 3)
170 = 2 (9x - 5)
170 = 18x - 10
180 = 18x
x = 10
Sehingga:
a. Panjang = 5x - 2 = 5 (10) - 2 = 48 cm
b. Lebar = 4x - 3 = 4(10) - 3 = 37 cm
c. Luas = Panjang x lebar = 48 x 37 = 1.776 cm²
Sekian, semoga membantu dan semangat!
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Jawab:
a. 48 cm
b. 37 cm
c. 1.776 cm²
Penjelasan dengan langkah-langkah:
Diketahui:
Panjang = (5x - 2) cm
Lebar = (4x - 3) cm
Keliling = 170 cm
Maka:
Keliling = 2 (panjang + lebar)
170 = 2(5x - 2 + 4x - 3)
170 = 2 (9x - 5)
170 = 18x - 10
180 = 18x
x = 10
Sehingga:
a. Panjang = 5x - 2 = 5 (10) - 2 = 48 cm
b. Lebar = 4x - 3 = 4(10) - 3 = 37 cm
c. Luas = Panjang x lebar = 48 x 37 = 1.776 cm²
Sekian, semoga membantu dan semangat!