panjang sisi belah ketupat PQRS adalah 20 cm hitunglah panjang diagonal PR yang ditanyakan adalah diagonal PR
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Penjelasan dengan langkah-langkah:
PR = 2 x √(5²+5²)
PR = 2 x √(25+25)
PR = 2 x √50
PR = 2 x ( √(25 x 2)
PR = 10√2 cm
PR = 2(√5² + 5²)
= 2(√(5(5) + (5(5)
= 2(√25 + 25)
= 2(√50)
= 2(√25.2)
= 2(√5².2)
= 2(5√2)
= 2(5)√2
= 10√2 CM