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mr Goodwill [35]
3 years ago
10

The diameter of the circle is 6 miles. What is the area of the circle? Use 3.14 for II.​

Mathematics
2 answers:
lawyer [7]3 years ago
8 0

Formula: A = πr²

Divide to find the radius.

6 / 2 = 3

Solve using the values we are given and solved for.

A = π(3)²

A = 9π

A ≈ 28.26

Best of Luck!

Marysya12 [62]3 years ago
6 0

Answer:

28.26 miles

Step-by-step explanation:

Area= pi times radius squared

diameter is twice the radius so 6÷2=3miles

3 miles is the radius

So A= 3.14 × 3²

= 28.26

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14. Find the volume of the sphere. Use 3.14 for pi and round to the nearest tenth if necessary.
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Answer:

  • Volume of the sphere is 904.3 mi³

Step-by-step explanation:

Given that radius of the sphere is 6 miles. To find Volume of the sphere we will substitute the Value of radius in the given formula:

\\  \:  \: \dashrightarrow { \underline{ \boxed { \pink{ \pmb{ \mathfrak {Volume_{(Sphere)} = \dfrac{4}{3} \pi r ^3 }}}}}} \\ \\

<em>Substituting</em><em> </em><em>the </em><em>required</em><em> </em><em>values:</em>

\\ \:  \: \dashrightarrow \sf \:  \:  Volume =  \dfrac{4}{3}  \times  3.14  \times  {(6)}^{3} \\ \\

\:  \: \dashrightarrow \sf \:  \:  Volume =  \dfrac{4}{3}  \times 3.14 \times 216 \\ \\

\:  \: \dashrightarrow \sf \:  \:  Volume =  \dfrac{4}{3}  \times 678.24 \\ \\

\:  \: \dashrightarrow \sf \:  \:  Volume =  \dfrac{2712.96}{3}  \\  \\

\:  \: \dashrightarrow \sf \:  \:     {  \underline{ \boxed{ \pink{ \pmb{ \mathfrak{Volume \approx 904.3 \:  {mi}^{3} }}}}}} \\  \\

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  • <u>Volume of </u><u>the </u><u>sphere is 904.3 mi³</u>
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Answer:

Cos (3pi/4) =0.999154554

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