Radius, Diameter And Circumference Question Preview (ID: 55735)


Find The Radius, Diameter And Circumference Of A Circle. TEACHERS: click here for quick copy question ID numbers.

If the radius of a circle is 7 cm, what is the diameter?
a) 14 cm
b) 3.5 cm
c) 16 cm.
d) 1 cm.

If the diameter of a circle is 50 mm, what is the radius?
a) 25 cm
b) 100 cm
c) 2.5 cm.
d) 10 cm

What is the formula for circumference if you know the radius?
a) c = pi x d
b) c = r x pi
c) c = 2r x pi
d) c/d = r

What is the formula for circumference if you are given the diameter?
a) c = pi x d
b) c= 2r x pi
c) c/pi = d
d) c = pi x r squared

Find the circumference of a circle with a diameter of 4 in.
a) 12.57 in.
b) 25.12 in.
c) 6.28 in.
d) 50.24 in

Find the circumference of a circle with a radius of 7 m.
a) 44 m
b) 21.98 m
c) 153.86 m
d) 10.99 m

Find the circumference of a circle with a radius of 5 1/2 ft,
a) 34.56 ft
b) 31.4 ft
c) 32.03 ft.
d) 78.5 ft.

Find the circumference of a circle with a 14 mm diameter.
a) 44 mm
b) 87.92 mm
c) 21.98 mm
d) not able to calculate

Find the circumference of a circle that has a radius of 1 inch.
a) 6.28 inches
b) 3.14 inches
c) 12.56 inches
d) 9.42 inches

If the circumference of a circle is 50.24, and the radius is 8. What is the ratio of the circumference to the diameter?
a) 3.14
b) 6.28
c) 16
d) 12.56

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