Question

Diameter and Radius WorksheetQuestion #1) Find the diameter of the circle if its radius is…. a) 4.3 cmb) 12 feetc) 8.25 kmd) 21 2/3 meterse) 5 in

Answer 1

The diameter of a circle is given by the next formula:

D = 2R

Where D is the diameter and R is the radius.

Now:

If the radius is, we replace the R on the diameter formula:

a) R =4.3cm:

D = 2R

D = 2(4.3cm)

D = 8.6 cm

b) R = 12 feet

D = 2(12 feet )

D = 24 feet

c) R=8.25 km

D = 2(8.25 km)

D = 16.5 km

d) 21 2/3 meters

D = 2(21 2/3 meters)

D= 130/ 3 meters or 43 (1/3) meters

e) 5 in

D= 2(5in)

D= 10 in