Jawaban:
Penjelasan dengan langkah-langkah:
√( 4a )² + ( 3a )² = 70
√16a² + 9a² = 70
√25a² = 70
5a = 70
a = 70/5
a = 14
Keliling = 4a + 3a + 70
= 4 ( 14 ) + 3 ( 14 ) + 70
= 56 + 42 + 70
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Jawaban:
168 cm
Penjelasan dengan langkah-langkah:
Cari a
√( 4a )² + ( 3a )² = 70
√16a² + 9a² = 70
√25a² = 70
5a = 70
a = 70/5
a = 14
Keliling = 4a + 3a + 70
= 4 ( 14 ) + 3 ( 14 ) + 70
= 56 + 42 + 70
= 168 cm