Sunday, March 21, 2010

math

Find the diameter of a circle with a radius of 12.6m.
Show the formula you used and all the work.
d=2r
d=2(12.6)
d=25.2m.♫♫♫

Find the radius of a circle when the diameter is 10.5cm.
Show formula and work.
r=d/2
r=10.5/5
r=5.25cm.

Find the circumference of a circle with a diameter of 3mm.
Show formula and work.
c=pi d
c=(3.14)(3mm)
c=9.42 mm.♦

Find the circumference of a circle with a radius of s.m.
Show formula and work
c=2pi r
c=2(3.14)(5)
c=10 314
c=c=31.4m.

Find the diameter of a circle with a circumference of 12.56 cm.
Show formula and work
d=c/35
d=1256/3.14cm
d=4cm.☻

Find radius of follow circles
d=4cm
d=10cm
c=15.7m
c=3.14cm.

2 comments:

  1. GOOD JOB LANCE! Next time try to add some videos or links about finding the circumference. Also, try not to use bright and light colours like yellow and light blue.
    ====KEEP UP THE GOOD WORK!!!====

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