Area and Perimeter (Rectangles and Trangles)

How do you find the area of a rectangle?

• Length + Length + Length + Length
• Length + Width
• Length x Width
• Width x Width

Area of a Triangle

• A = 1/2h(b1 + b2)
• A = bh
• A = 1/2bh

What is the area?

• 35 cm
• 30 cm
• 35 sq cm
• 12 cm

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
• 157.5 square feet

What is the perimeter of this rectangle?

• 42 cm

• 108 cm

What is the area of this triangle?

• 12 cm²

• 24 cm²

What does area mean?

• the distance around a shape
• half the distance around a shape
• the amount of space outside a shape
• the amount of space inside a shape

How do you find the PERIMETER of a triangle?

• Multiply the sides together

• Add up the lengths of all the sides

• Add a bunch of random letters together

• Multiply the sides together, then remove two of them

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

• 17 cm

• 18 cm

• 60 cm

• 30 cm

• 40 in²
• 40
• 40 in
• 4 in²