Question

radius =

diameter = 10mm
e.
11 m
radius =

diameter =

f.
diameter = 30 mm
radius =

diameter =

g.
26 km
radius =

diameter =

h.
7 cm
radius =

diameter =

l.
50 mm

Explanation:

Step1: Recall radius - diameter relation

The formula is $d = 2r$ (where $d$ is diameter and $r$ is radius), so $r=\frac{d}{2}$.

Step2: Solve for e

Given $r = 11m$, then $d=2\times11m = 22m$.

Step3: Solve for f

Given $d = 30mm$, then $r=\frac{30mm}{2}=15mm$.

Step4: Solve for g

Given $d = 26km$, then $r=\frac{26km}{2}=13km$.

Step5: Solve for h

Given $r = 7cm$, then $d = 2\times7cm=14cm$.

Step6: Solve for j

Given $d = 50mm$, then $r=\frac{50mm}{2}=25mm$.

Step7: Solve for k

Given $r = 17$, then $d = 2\times17 = 34$.

Answer:

e. radius = 11m, diameter = 22m
f. radius = 15mm, diameter = 30mm
g. radius = 13km, diameter = 26km
h. radius = 7cm, diameter = 14cm
j. radius = 25mm, diameter = 50mm
k. radius = 17, diameter = 34