Question

Can anyone help me in this pls

Answer 1

Answer:

y = $\sqrt{r^{2}- x^{2} }$

Answer 2

Answer:  bottom right corner

y = sqrt(r^2 - x^2)

Work Shown:

Use the Pythagorean theorem to solve for y

a^2 + b^2 = c^2

x^2 + y^2 = r^2

y^2 = r^2 - x^2

y = sqrt(r^2 - x^2)