The dashed figure is a dilation of the original figure. find the scale factor. classify the dilation as an enlargement or a reduction. 1. scale factor 1/3 reduction 2. scale factor 4 enlargement 3. scale factor 3 enlargement 4. scale factor 1/4 reduction

1:I read this to state that the lengths of the sides are lessened by a scale factor of 1/3. One of the sides has length 6.3 cm and 33% of 6.3 is 13×6.3=2.1 cm. Accordingly the length of the new rectangle is 6.3 - 2.1 - 4.2 cm. 
You can do this in one stage. In the event that you lessen the length by 33% you are left with 66% and 23×6.3=4.2. 
2:The size of an augmentation/lessening is portrayed by its scale factor. For instance, a scale factor of 2 implies that the new shape is double the measure of the first. A scale factor of 3 implies that the new shape is three times the extent of the first. 
3:Enlarge the triangle with scale factor 3, utilizing O as the focal point of extension. The graph demonstrates the 2 triangles; the clarification takes after. To start with draw lines from point O through A, B and C, as appeared in the chart. Measure the length O An and increase it by 3 to get the separation from O of the picture point An', i.e. 
4:is 8

Hello!
volume of sphere =4/3.pi.r^3