Perimeter Measurement Concepts

JT measures various classroom items to find their perimeters. He calculates the perimeter of a rectangular book by adding the lengths of its sides. He then measures a hexagonal eraser, adding the lengths of its sides to find the perimeter. Yaya calculates the side length of her hexagon eraser by dividing the perimeter by the number of sides. Finally, JT measures the perimeter of a round clock using a string and ruler.

How does JT calculate the perimeter of the rectangular book?

• By multiplying the length and width

• By measuring the diagonal

• By using a piece of string

• By adding the lengths of all sides

What is the perimeter of JT's hexagonal eraser if each side is 1 inch?

• 5 inches

• 6 inches

• 8 inches

• 7 inches

Yaya's hexagonal eraser has a perimeter of 12 inches. How long is each side?

• 1.5 inches

• 1 inch

• 2 inches

• 2.5 inches

What tool does JT use to measure the perimeter of the round clock?

• A ruler

• A protractor

• A measuring tape

• A piece of string

What is the measured perimeter of the clock?

• 11 inches

• 9 inches

• 12 inches

• 10 inches