Question

Pls help on my maths

Answer 1

Answer:

• $r = 2.82$

Step-by-step explanation:

Given:

• $A = 25$

Let's simplify.

• => $25 = \frac{22}{7} r^{2}$
• => $\frac{25}{\frac{22}{7} } = \frac{\frac{22}{7}r^{2} }{\frac{22}{7\\} }$
• => $\frac{7(25)}{22} = r^{2}$
• => $\sqrt{\frac{25(7)}{22}}= \sqrt{r^{2}}$
• => $\sqrt{\frac{25(7)}{22}}= r$
• => $r = 2.82$ (Estimated)

Therefore, r ≈ 2.82.

Hoped this helped.

Answer 2

Answer:

r= 5/√  π

or

r=2.820948 or simplified =2.82

​

Step-by-step explanation: it could be either one of these