Question

Explain why the length of ac is 13 cm

Answer 1

Step-by-step explanation:

ABC is a right triangle

So,

AC² = AB² + BC²

= (12 cm)² + (5 cm)²

= 144 cm² + 25 cm²

AC² = 169 cm²

AC = 13 cm

Answer 2

AC=13cm

AD=13,9cm

Explanation:

a)Pythagoras' Theorem in ABC, right-angle triangle

AC²=AB²+BC²

AC²=144cm²+25cm²=169cm²

AC=13cm

b)ACD is right-angle triangle

AD²=AC²+CD²

AD²=169cm²+25cm²=194cm²

AD=√194cm

AD=13,9CM