Question

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Answer 1

Answer:

78.5 square units

Step-by-step explanation:

$d = 10 \implies \: r = \frac{10}{2} = 5 \\ area \: of \: circle \\= \pi {r}^{2} \\ = 3.14 \times {5}^{2} \\ = 3.14 \times 25 \\ = 78.5 \: {units}^{2}$

Answer 2

Step-by-step explanation:

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