Core Connections, Course 1 Selected and Partial Answers

CC1 1-10

a. 8 toothpicks go about the 4 tiles below. So perimeter is 8; area is 4.

 

 

CC1 1-11

a. Area: 4 square cm. Perimeter: 5 cm + 5 cm + 4 cm + 4 cm

b. Area: 40 sq. cm. Perimeter: 26 cm. Be sure to explain how these answers relate to the given measurements of the rectangle.