Area & Perimeter (Lesson + Practice)

Solving for Area & Perimeter

(lesson & practice)

By Mr. Guntle

​Perimeter...​

"The total distance around a shape."

• Can be solved by adding up all of the sides together.

• If there is NO measurement in the problem, remember to write "units" after the number.​​

  • Ex. 5 + 8 + 5 + 8 = 10 + 16 = ​26 units

  • Ex. (5 x 2) + (8 x 2) = 10 + 16 = 26 units

Multiple Choice

What does perimeter mean?

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

• the amount of space inside a shape divided by two
• half the distance around a shape

Multiple Choice

Do you multiply or add when you find the perimeter?

• Multiply
• Add

Multiple Choice

Find the PERIMETER of the rectangle

• 28 yd.

• 11 yd.

• 22 cm.

• 22 yd.

Multiple Choice

Find the perimeter of the square.

• 49 in.

• 14 in.

• 28 in.

• 28 cm.

Multiple Choice

Find the perimeter of the rectangle.

• 28 cm.

• 40 in.

• 40 cm.

• 14 cm.

​

​Area...​

"The amount of space inside a shape"

• Can be solved by multiplying the base x height, or length x width. (You only need 1 length & 1 width!)

• Ex. 4 x 5 = 20

  • since there is no measurement in the problem, we would write 20 units² or 20 square units

Multiple Choice

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

Multiple Select

What is the formula for finding area of a rectangle?

• Area = length x width

• Area = length + length + width +width

• Area = base x height

• Area = base x base x height x height

Multiple Choice

What is the area of the rectangle?

• 15 square cm.

• 15 cm.

• 2 square 

• 16 cm²

Multiple Choice

What is the area of this rectangle?

• 108 square feet

• 28 square feet

• 16 ft.²

• 40 feet²

Multiple Choice

Find the measurement of the length & the width. What is the area of this rectangle?

• 54

• 54 square units

• 18 square units

• 40 square units