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Verified answer
Bangun DatarDiketahui:
AB : AD = p : l = 7 : 5
p = 7n
l = 5n
K persegi panjang = 216 cm
Ditanya:
L persegi panjang = ?
Jawab:
K persegi panjang = 2 (p + l)
216 = 2 (7n + 5n)
216/2 = 12n
108 = 12n
n = 108/12
n = 9
p = 7n
p = 7 x 9
p = 63 cm
l = 5n
l = 5 x 9
l = 45 cm
L persegi panjang = p x l
= 63 x 45
= 2835 cm^2 (D).
*semoga membantu. sukses selalu ^_^
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Semoga membantu ya dek..