Question

Marking as brainliest

Answer 1

Answer:

9.21 (3sf)

Step-by-step explanation:

11^2 - 6^2 = 85

root 85 = 9.21 (3sf)

Answer 2

Answer:

x = 9.21 ft

Step-by-step explanation:

This is a right angled triangle as you can see the symbol that shows this, meaning to find x we can use pythagoras theory:

$a^2 + b^2 = c^2$

We need to find one of the sides so rearrange the equation so the subject is a or b:

$a^2 = c^2 - b^2$

Plug the values in:

$a^2 =11^2 - 6^2$

$a^2 =121 - 36$

$a^2 = 85$

Square root both sides to find a:

$\sqrt{a^2} = \sqrt{85}$

a = $\sqrt{85}$

a = 9.21

x = 9.21

Hope this helps!