Minta Tolong di jawab lengkap ya
Jawaban:
30 cm2
Penjelasan dengan langkah-langkah:
K = 3X + (X + 1) + (3X +1) = 30
7X + 2 = 30
7X = 30 - 2
7X = 28
X = 28/7
X = 4
L = (a x t)/2
= ((X + 1) x (3X))/2
= ((4 + 1) x (3 x 4))/2
= (5 x 12) /2
= 60/2
= 30 cm2
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