Unit 5 Lesson 7 Practice Problems 1. A solid with volume 8 cubic units is dilated by a scale factor of to obtain a solid with volume cubic units.

Find the value of which results in an image with each given volume. (Show your work for credit.)

RECALL: K3=Volume of image/volume of pre-image

a. 216 cubic units

b. 1 cubic unit

c. 1,000 cubic units

2. A solid with surface area 8 square units is dilated by a scale factor of to obtain a solid with surface area square

units.

Find the value of which leads to an image with each given surface area. (Show your work for credit.)

RECALL:

K2=Surface Area of image/Surface Area of pre-image

a. 512 square units

b. ½ square unit

c. 8 square units