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luas = 45cm
panjang siku = alas = 10cm
Ditanya :
panjang hipotenusa ?
Jawab :
luas = alas × tinggi x 1/2
45 = 10 × tinggi x 1/2
45 = 5 × tinggi
9 = tinggi
sisi miring (SM)= hipotenusa
SM² = alas² + tinggi²
SM² = 10² + 9²
SM² = 100 + 81
SM² = 181
SM = √181
Jadi panjang hipotenusanya adalah √181