2 years ago

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]2 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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