If the circumference of a circle is 44 cm, then its diameter is ……

1.	If the circumference of a circle is 44 cm, then its diameter is …………… cms. A) 16 B) 21 C) 7 D) 14
Answer» Correct option is D) 14 Let radius of the circle be r cm. \(\therefore\) 2πr = 44 (\(\because\) circumference of the circle is 44 cm) ⇒ r = 44/2π = 22/π = 22 x 7/22 = 7 cm \(\therefore\) Diameter of the circle is 2r = 2 x 7 = 14 cm

If the circumference of a circle is 44 cm, then its diameter is …………… cms. A) 16 B) 21 C) 7 D) 14

Answer»

Correct option is D) 14

Let radius of the circle be r cm.

\(\therefore\) 2πr = 44 (\(\because\) circumference of the circle is 44 cm)

⇒ r = 44/2π = 22/π = 22 x 7/22 = 7 cm

\(\therefore\) Diameter of the circle is 2r = 2 x 7 = 14 cm