Answer:
78.5 square units
Step-by-step explanation:
[tex]d = 10 \implies \: r = \frac{10}{2} = 5 \\ area \: of \: circle \\= \pi {r}^{2} \\ = 3.14 \times {5}^{2} \\ = 3.14 \times 25 \\ = 78.5 \: {units}^{2} \\ [/tex]
Use this formula: A = πr^2
1) Plug in: A = π x 5^2
* I got 5 from the diameter. Whatever the number is, the radius will always be half*
2) A = π x 25
3) 3.14 x 25 is 78.5 units^2
