Question

Please give me answer ​

Answer 1

Step-by-step explanation:

triangle abc =90°

by pythagorus theorem

hyp²= base²+height²

x² = 40² + 9²

x² = 1600 + 81

x²= 1681

x= 41

Answer 2

Answer:

BC^2 + AB^2 = AC^2

= 1600 + 81 = AC^2

1681 = AC^2

AC = root 1681

AC = 41