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Verified answer
Kelas 8 MatematikaBab Kesebangunan
p = 48 cm
l = 36 cm
s = 3 cm
Lebar bagian bawah yang tidak tertutup foto
= (2 . p/l - 1) . s
= (2 . 48/36 - 1) . 3
= (96/36 - 36/36) . 3
= (60/36) . 3
= 5 cm
Luas karton yang tidak tertutup foto
= 5 . lebar
= 5 . 36
= 180 cm²
makasih^^