Area and Perimeter

Front

What is the definition of perimeter?

Back

Perimeter is the total distance around the outside of a shape.

Front

How do you calculate the perimeter of a rectangle?

Back

Add the lengths of all four sides or use the formula: P = 2(length + width).

Tags

CCSS.4.MD.A.3

Front

What is the definition of area?

Back

Area is the amount of space inside a shape.

Front

How do you calculate the area of a rectangle?

Back

Multiply the length by the width: A = length × width.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the perimeter of a rectangle with a length of 10 cm and a width of 5 cm?

Back

P = 2(10 cm + 5 cm) = 30 cm.

Tags

CCSS.4.MD.A.3

Front

What is the area of a rectangle with a length of 10 cm and a width of 5 cm?

Back

A = 10 cm × 5 cm = 50 cm².

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the formula for the perimeter of a square?

Back

P = 4 × side length.

Tags

CCSS.4.MD.A.3

Front

What is the area of a square with a side length of 4 m?

Back

A = 4 m × 4 m = 16 m².

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If a rectangle has a perimeter of 40 cm and a length of 15 cm, what is the width?

Back

Width = (40 cm - 2 × 15 cm) / 2 = 5 cm.

Tags

CCSS.4.MD.A.3

Front

What is the perimeter of a triangle with sides measuring 3 cm, 4 cm, and 5 cm?

Back

P = 3 cm + 4 cm + 5 cm = 12 cm.

Tags

CCSS.3.MD.D.8