Question

r=4cm d=_______cm
r=1cm. d=_______cm
r=25cm. d=_______cm
r = 19 cm d=________cm
r=1m. d=_________m
r=400cm. d=__________cm
r=250cm d=___________cm
r=56cm. d=_________cm
r=4m. d=__________m
r=90m. d=__________m​

Answer 1

formula : d=2r

r=4 cm => d=2*4=8 cm

r=1 cm => d=2*1=2 cm

r=25 cm => d=2*25=50 cm

r=19 cm => d=2*19=38 cm

r=1 m => d=2*1=2 m

r=400 cm => d=2*400=800 cm

r=250 cm => d=2*250=500 cm

r=56 cm => d=2*56= 112 cm

r=4 m => d=2*4 =8 m

r=90 m => d=2*90=180 m