G56.M4.S7.Q1

What is the relationship between the circumference (C) of a circle and its diameter (d)?

• C = d + d

• C = 2d

• C = πd

• C = 3d

If two circles have the same radius, which one will have a larger circumference?

• The one with a smaller diameter

• Both will have the same circumference

• The one with a larger diameter

• It depends on the value of π

If the diameter of a circular mirror is 36 cm, what is the mirror's circumference? (Use π = 3.14)

• 226.08 cm

• 123.04 cm

• 113.04 cm

• 203.04 cm

The radius of a circle is 100 units, find the area of the circle. (Use π = 3.14)

• 3140.0 sq units

• 31.400 sq units

• 314.00 sq units

• 31400 sq units

Determine the radius of the circle. If the area of a circle is 64π square units.

• 9 units

• 8 units

• 6 units

• 16 units

A spaceship went around the moon making a circular path of radius 350000 km. Find the length of its path. (Use π = 22/7)

• 220000 km

• 2122220 km

• 220.0000 km

• 2200000 km

A garland woven with flowers needs to be stuck around a circular ring to decorate it. How long should the garland be so as to cover a ring of a radius of 7 cm? (Use π = 22/7)

• 44 cm

• 22 cm

• 24 cm

• 308 cm