Diketahui layang-layang ABCD dengan panjang AB=15cm,dan diagonal BD=24cm. Jika keliling layang-layang tersebut 70cm,maka luas layang-layang tersebut adalah... Pakai cara!Penting!
salsabillafariz
70 = 2 (AB +BC) 35 = 15 + BC BC = 35 - 15 = 20 cm
AC = √20² - 12² = √400 - 144 =√256 =16 cm L = 1/2 x AC xBD = 1/2 x 16 x 24 = 192 cm²
35 = 15 + BC
BC = 35 - 15 = 20 cm
AC = √20² - 12²
= √400 - 144
=√256 =16 cm
L = 1/2 x AC xBD
= 1/2 x 16 x 24
= 192 cm²