Perimeter

If a triangle has sides measuring 3 units, 4 units, and 5 units, what is its perimeter?

• 10 units (3 + 4 + 3)

• 11 units (3 + 4 + 4)

• 12 units (3 + 4 + 5)

• 13 units (4 + 4 + 5)

What is the perimeter?

• The perimeter is the total distance around the outside of a shape.

• The perimeter is the area enclosed by a shape.

• The perimeter is the length of one side of a shape.

• The perimeter is the sum of the angles in a shape.

What is the perimeter of a polygon?

• Multiply the length of one side by the number of sides.

• Add the lengths of all its sides.

• Divide the total area by the number of sides.

• Calculate the average length of the sides.

How do you calculate the perimeter of a rectangle?

• Add the lengths of all four sides

• Use the formula: P = length × width

• Use the formula: P = 2(length + width)

• Multiply the length by the width and add the height

What is the perimeter of a regular pentagon with each side measuring 6 units?

• 24 units

• 30 units (5 x 6)

• 36 units

• 18 units

If a square has a perimeter of 24 units, what is the length of one side?

• 4 units

• 5 units

• 6 units

• 8 units

Farmer Bob needs to build a fence around a rectangular area that is 40 feet long and 20 feet wide. How many feet of fence does he need?

• 100 feet

• 120 feet

• 80 feet

• 140 feet

If a circle has a diameter of 10 units, what is its perimeter (circumference)?

• 25.0 units

• 31.4 units

• 20.0 units

• 15.7 units

What is the perimeter of a rectangle with a length of 12 cm and a width of 8 cm?

• 30 cm (P = 2(12 + 3))

• 40 cm (P = 2(12 + 8))

• 50 cm (P = 2(12 + 13))

• 36 cm (P = 2(12 + 6))

How do you find the perimeter of an irregular shape?

• Measure and add the lengths of all the sides.

• Calculate the area of the shape.

• Use a formula for regular polygons.

• Estimate based on the longest side.