Question

Does anyone know this

Answer 1

Answer:

4.9 (rounded)

Step-by-step explanation:

a^2 + 1^2 = 5^2

a^2 + 1 = 25

      - 1     - 1

= a^2 = 24

$\sqrt{a^2 = 24}$ = 4.9 (rounded)

Answer 2

Answer:

a=170

Step-by-step explanation:

180-6=174mil

round to 170.