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muminat
3 years ago
6

Find the area of a circle with diameter 10cm use the value 3.14

Mathematics
2 answers:
katrin2010 [14]3 years ago
7 0

Answer:

<h2><em>7</em><em>8</em><em>.</em><em>5</em><em> </em><em>cm^</em><em>2</em></h2>

<em>solution \\ diameter = 10 \: cm \\ radius =  \frac{10}{2}  = 5 \: cm \\ area \: of \: circle = \pi \:  {r}^{2}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 3.14 \times  {5}^{2}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 3.14 \times 5 \times 5 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 3.14 \times 25 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 78.5 {cm}^{2}</em>

<em>hope </em><em>this </em><em>helps.</em><em>.</em><em>.</em>

<em>Good </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em><em>.</em>

mafiozo [28]3 years ago
3 0

Answer:

78.5 cm

Step-by-step explanation:

The area of a circle is represented by A = πr². Since we are replacing the value of pi(π) with 3.14, and the diameter is 10, meaning the radius(r) is 5, we can plug both values into the equation, to get A = 3.14(5^2). This simplifies to 78.5.

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