Find the circumference of a circle:

whose radius is 3 ½ in. (22/7)

whose diameter is 3.6 (3.14)

1. 22 in

2. 11.304 units

Step-by-step explanation:

Formulas for the circumference are

C = 2πr

C = πd

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1. Put the given numbers in the appropriate formula:

C = 2·(22/7)·(7/2 in) = 22 in

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2. Put the given numbers in the appropriate formula:

C = 3.14·3.6 = 11.304 . . . units

there are no short passages to look at

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl