Question

I don't know how to do this... Please help me

Answer 1

I think the person above me is correct, and if it’s not I’m sorry I can’t help :(

Answer 2

a) radius: 5mm
Diameter: 10mm

b) radius: 6 cm
Diameter: 12cm

c)radius: 9m
Diameter: 18m

d) radius: 8km
Diameter: 16km

e) radius: 11m
Diameter:22m

f) radius: 15mm
Diameter: 30mm

g) radius: 13km
Diameter:26km

h) radius: 7cm
Diameter: 14cm

I) radius: 9km
Diameter: 18km

j) radius: 1m
Diameter:2m

k) radius: 17cm
Diameter:34cm

l)radius 25mm
Diameter 50mm