Question

Luas belah ketupat KLMN 15Ocm² jika panjang diagonal KM =20cm maka keliling....?

I am wait ypur answer

Answer 1

Luas = 1/2 × d1 × d2
d2 = (2×luas) : d1
= (2×150) : 20
= 300 : 20
= 15 cm

sisi miring = √10*2 + 7,5*2
= √100 + 56,25
= √156,25
= 12,5 cm

keliling = 4 × sisi
= 4 × 12,5
= 50 cm


keterangan : (*= pangkat)