Penjelasan dengan langkah-langkah:
luas persegi panjang = p×l
= (8+√3) (8-√3)
= 64 - 8√3 + 8√3 -3
=64-3
= A. 61 cm²
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Penjelasan dengan langkah-langkah:
luas persegi panjang = p×l
= (8+√3) (8-√3)
= 64 - 8√3 + 8√3 -3
=64-3
= A. 61 cm²