Question

a circle has a circumference of 10 cm
The radius of this circle is closest to
A. 1.3cm
b.1.6cm
c.1.8cm
d.3.2cm
e.5.0cm
a circle has a circumference of 10 cm
The radius of this circle is closest to
A. 1.3cm
b.1.6cm
c.1.8cm
d.3.2cm
e.5.0cm
@Mathematics

Answer 1

use the formulae that relates the circumference C to its radius r:\[C=2\pi r\]to get:\[r=C/2\pi\]

Answer 2

you can approximate pi as:\[\pi\approx \frac{22}{7}\]

Answer 3

how, what answer did u get

Answer 4

so then you get:\[r\approx \frac{C}{2*\frac{22}{7}}\]\[r\approx \frac{C}{\frac{44}{7}}\]\[r\approx C*\frac{7}{44}\]