Perimeter of a Triangle

Find the perimeter of this triangle.

• 20 cm

• 21 cm

• 40 cm

• 12.5 cm

Using the formula for the perimeter of a triangle, solve for the perimeter of the triangle.

• 26 cm

• 30 cm

• 21 cm

• 16 cm

Using the formula for the perimeter of a triangle, solve for the perimeter of the triangle.

• 17 cm

• 18 cm

• 60 cm

• 30 cm

What is the perimeter of the triangle?

• 51 cm

• 59 cm

• 45 cm

• 48 cm

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

c

163

202 mm

41 mm

39 mm

38 mm

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

• 19.8 km²
• 37.8 km²
• 18.9 km²
• 35 km²

Compute the perimeter of the triangle.

• 54 m

• 53 m

• 55 m

• 52 m

Compute the perimeter of the triangle.

• 21 cm

• 31 cm

• 49 cm

• 27 cm

Compute the perimeter of the triangle.

• 50 m

• 40 m

• 45 m

• 55 m