Tinggi suatu jajar genjang 2 kali panjang alasnya, jika luas jajar genjang itu 98 cm2, maka tinggi jajar genjang adalah ?? A. 10 cm B. 12 cm C. 14 cm D. 18 cm
Salsabilazahrah
C. 14 cm karena 98 = a x t 98 = 7 x 14 98 = 98
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Ima
L = (jml sisi sejajar) × t 2 98 = ( x + x) × 2x 2 98 = 2x × 2x 2 98 = 2x² 49 = x² √49 = x 7 = x
karena
98 = a x t
98 = 7 x 14
98 = 98
2
98 = ( x + x) × 2x
2
98 = 2x × 2x
2
98 = 2x²
49 = x²
√49 = x
7 = x
Tinggi = 2x = 2(7) = 14