Question

3) What is the diameter of the circle, if the
circumference is 31.4 cm?

A) 5 cm
B) 10 cm
C) 8 cm
D) 8.5 cm
​

Answer 1

Answer:

The answer is

d≈9.99cm

Answer 2

Answer:

let's find out the radius first.....by using the circumference formula...

2πR = 31.4------{ where R is the radius}

=> R = 31.4/2× 3.14. ---------{ since π= 3.14 }

=> R = 5 cm

since diameter of a circle is equal to 2 R hence the diameter 2×5 i.e 10cm

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