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Ausv\ee; Math Homework November 30th - December 7th, ZOLT Skills You'll Need: Quick Review are the same distance from the centre of the circle. the distance between a point on a circle and the centre of the circle is a radius of the circle. The plural of radius is radii. The distance between two points on a circle through its centre is a diameter of the circle. times the length of any radius, r. Thatis, d=2r Another way of thiriking about this relationship is that the radius, r, of acircle is one-half the diameter, dTltatis, 7 = id, ", t You cdh find the diameter of a circre for a given radius, and vice versa. For example, in a circle, d= 10. Since r=lil,r=5, If r = 5 is given, then use d= Zr. d=2x5=10 l. This circle has the centre at point O. a) Draw a radius of the circle. What is the radius of the circle? 2 or*. b) Draw a diameter of the circle. What is the diameter of the ,,rf.F L circle? al cr^ From your results in question l, write a relationship between the radius and the diameter of a circle. lr = d 3. Find the diameter of the circle with each radius. al r2.* { dt 2t ctn bl 27 r,23- l.Ltbrwr .) ::! a. ,^ 5'l cvn ** 0.bbt^Ls* 6-$ c) 3.4 cm o *.* I "'^ -1,lq .4 .,-^. 11 cvv\ lo Find the radius of the circle with each diameter. al 12 cm I b Cnn dl r.23m 0.615vr^ b) 27.* l3.Sc* .) ** L O.lbS rn c) 3.4 cm l-?cn- fl *.* 0.TSc,v- z^ Write the steps you would take to iru*. circle with diameter 4 cm. {. (At{ c.o\af f L. ** 3. 6. r= 7.,n aicolz [email protected] @=pa"'- "cte*k Circular plates with diameter 12 cm are placed side by side on the top of a table. The table measures 2.4mbY 1.2 m. To convert metres to centlmetres, a) What is the length of the tabletop in centimetres? multtply by b) How many Blates can fit side by side along the length of the table? cn^ c) What is the width of the tabletop in centimetres? I 24 d) How many plates can fit side by side along the width of the table? e) '!40. How many plates can fit side by side on the tabletop with no part of a plate extending over the edge of the table? Zno f,t-.{.s t