Area and Perimeter of Triangles

Find the area of this triangle.

• 12 in²

• 22 in²

• 18 in²

• 24 in²

Find the perimeter of the following triangle:

• 15 units

• 6 units

• 20 units

• 12 units

Find the area of the following triangle:

• 12 units²

• 6 units²

• 20 units²

• 12 units²

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

Robert is making a triangular garden in his backyard. Using the diagram of the triangle how much mulch would he need to fill his garden?

• 8.2 in²

• 16.4 in²

• 32.8 in²

• 4.1 in²

Macy is making a triangular scarf for her dog. Using the triangle as a guide, how much fabric would she need to make the scarf.

• 7.35 cm²

• 14.7 cm²

• 29.4 cm²

Find the perimeter of this triangle.

• 20 cm

• 21 cm

• 40 cm

• 12.5 cm

What is the perimeter of the shape?

• 4 in.

• 10 in.

• 12 in.

• 7.5 in.

Calculate the area of the triangle

• 27.3 mi²

• 54 mi²

• 27 mi²

• 54.6 mi²

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