Perimeter of Triangles and Rectangles

Find the perimeter of this triangle.

• 20 cm

• 21 cm

• 40 cm

• 12.5 cm

Tags

CCSS.3.MD.D.8

Farmer Bob's son built a track to walk his pet pig.  The track goes around the pig pen.  The pig pen is 15 feet long and 21 feet wide.  If the pig walks all the way around the track, how many feet did he walk?

• 72 feet

• 36 feet

• 36 square feet

Tags

CCSS.3.MD.D.8

Find the perimeter of the rectangle.

• 50 in.

• 25 in.

• 45 in. 

• 100 in.

Tags

CCSS.4.MD.A.3

Maria wants to put trim around her artwork. Use the image to calculate how many inches of trim Maria would need.

• 16 inches

• 22 inches

• 26 inches

• 44 inches

Tags

CCSS.4.MD.A.2

Type your answer

Tags

CCSS.4.MD.A.3

The perimeter of the triangle shown is 17x units. The dimensions of the triangle are given in units. Which equation can be used to find the value of x?​ (a)   What is the perimeter of the triangle?​ (b)   units.

• 51

• 3

• 21

• 82

• 5

Tags

CCSS.3.MD.D.8

The perimeter of the isosceles triangle is 365 millimeters. What is the length of the missing side?

c

38 mm

202 mm

163

41 mm

39 mm

Tags

CCSS.3.MD.D.8

The perimeter of the isosceles triangle is 365 millimeters. What is the length of the missing side?

c

39 mm

38 mm

41 mm

163

202 mm

Tags

CCSS.3.MD.D.8

The perimeter of the triangle shown is 17x units. The dimensions of the triangle are given in units. Which equation can be used to find the value of x?​ (a)   What is the perimeter of the triangle?​ (b)   units.

• 51

• 3

• 21

• 82

• 5

Tags

CCSS.3.MD.D.8

The perimeter of the triangle shown is 17x units. The dimensions of the triangle are given in units. Which equation can be used to find the value of x?​ What is the perimeter of the triangle?​ units.

• 51

• 3

• 21

• 82

• 5

Tags

CCSS.3.MD.D.8