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lisov135 [29]
3 years ago
11

3 of 8 The area of a circle is 16.71cm2. Find the length of the radius rounded to 2 DP.

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
6 0

Answer:

Radius = 2.31 cm

Step-by-step explanation:

Area of circle = 16.71 square centimeters

\pi r^2 = 16.71 \\3.14r^2=16.71\\r^2=\frac{16.71}{3.14}\\r^2=5.32\\\sqrt{r^2}=\sqrt{5.32}\\r=2.306

Radius of circle = 2.31 centimeter

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B + P = $14 } Equation 1  

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The cost of the book is two dollars more than twice the cost of the pen.

B = 2P + $2 } Equation 2  

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<h3>Verify </h3>

We can substitute these values in equations 1 and 2 and check the results:

B + P = $14 } Equation 1

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<h2><em>Spymore</em></h2>
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