Question

Luas Segitiga Sama Kaki Dengan Alas 10cm,Dan Kelilingnya 36cm Adalah

A.60Cm²
B.65Cm²
C.120Cm²
D.130Cm²

Pake Cara ya= / Report=⚠

Answer 1

Verified answer

✔ Mapel = Matematika
✔ Kelas = 7 SMP
✔ Materi = Segitiga
✔ Kata kunci = Teorema Phytagoras

Penyelesaian :
➡➡➡➡➡➡➡➡➡➡➡➡

a + 2kaki = Keliling
2kaki = Keliling - a
2kaki = 36 cm - 10 cm
kaki = 26 cm / 2
kaki = 13 cm

Tinggi Segitiga
= √(13² - (10/2)²)
= √(169 - 25)
= √144
= 12 cm

Luas Segitiga
= ½ x a x t
= ½ x 10 cm x 12 cm
= 60 cm²

Semoga Membantu :)