Question

how long is the radius of a circle of circumference 21.98 cm

Answer 1

Answer:

Since we have to find radius.

we know

Circumference = 21.98

$\pi \: d = 21.98 \\ 3.14d = 21.98 \\ d = \frac{21.98}{3.14} \\ d = 7$

So radius = d/2 = 7/2 = 3.5 cm

Answer 2

Answer:

The radius is 34.84

Step-by-step explanation:

2 π R = 21.98

=> R = 2190*7/2*22*100

=> R = 34.84

The radius is 34.84

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