The circumference of a circle is 132 cm. A second circle has a diameter equal to the radius of the first circle. What is the circumference (in cm) of the second circle? (Take π = 22/7)

Question

Accepted Answer

66 cm. First: 132 = 2*22/7*r => r = 21 cm. Second circle has diameter 21 cm, so C2 = π*d = 22/7*21 = 66 cm.

The circumference of a circle is 132 cm.
A second circle has a diameter equal to the radius of the first circle.
What is the circumference (in cm) of the second circle? (Take π = $\frac{22}{7}$ )

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Circumference of a Circle practice

The circumference of a circle is 132 cm.A second circle has a diameter equal to the radius of the first circle.What is the circumference (in cm) of the second circle? (Take π = 722​)

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Circumference of a Circle practice

The circumference of a circle is 132 cm.
A second circle has a diameter equal to the radius of the first circle.
What is the circumference (in cm) of the second circle? (Take π = $\frac{22}{7}$ )