Tentukan keliling dan luas segitiga ABC tersebut!
luas = 25×24÷2
=300
keliling 25+25+25=75
Panjang DB = √25² – 24²
= √625 – 576
= √49
= 7 cm
Panjang AB = 7 + 7 = 14 cm
Panjang AC = √24² + 7²
= √576 + 49
= √625
= 25 cm
KELILING = 14 cm + 25 cm + 25 cm
= 64 cm
LUAS = a × t / 2
= 14 × 24 / 2
= 168 cm²
semoga membantu