K = 46
L = 120
Penjelasan dengan langkah-langkah:
mencari lebar dahulu
l² = 17² - 15²
= 289 - 225
= 64
l = √64 = 8
K = 2(p + l)
= 2(15 + 8)
= 2 x 23
= 46
L = p x l
= 15 x 8
= 120
menentukan lebar (Teorema pyhtagoras)
l² = (17 × 17) - (15 × 15)
l² = 289 - 225
l² = 64
l = √64
l = 8 cm
• Keliling
K = 2 × (p + l)
K = 2 × (15 + 8)
K = 2 × 23
K = 46 satuan
• Luas
L = p × l
L = 15 × 8
L = 120 satuan(²)
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K = 46
L = 120
Penjelasan dengan langkah-langkah:
mencari lebar dahulu
l² = 17² - 15²
= 289 - 225
= 64
l = √64 = 8
K = 2(p + l)
= 2(15 + 8)
= 2 x 23
= 46
L = p x l
= 15 x 8
= 120
menentukan lebar (Teorema pyhtagoras)
l² = 17² - 15²
l² = (17 × 17) - (15 × 15)
l² = 289 - 225
l² = 64
l = √64
l = 8 cm
• Keliling
K = 2 × (p + l)
K = 2 × (15 + 8)
K = 2 × 23
K = 46 satuan
• Luas
L = p × l
L = 15 × 8
L = 120 satuan(²)