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

If a rectangle has a length of 5 m and a width of 4 m, what is its perimeter?

Back

P = 2(5 m + 4 m) = 18 m.

Tags

CCSS.4.MD.A.3

Front

If a rectangle has a length of 6 cm and a width of 3 cm, what is its area?

Back

A = 6 cm × 3 cm = 18 cm².

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the perimeter of a square with a side length of 4 in?

Back

P = 4 × side length = 4 × 4 in = 16 in.

Tags

CCSS.4.MD.A.3

Front

What is the area of a square with a side length of 5 cm?

Back

A = side length × side length = 5 cm × 5 cm = 25 cm².

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If a rectangle has a perimeter of 30 m and one side is 10 m, what is the length of the other side?

Back

P = 2(length + width) => 30 m = 2(10 m + width) => width = 5 m.

Tags

CCSS.4.MD.A.3

Front

What is the formula for the perimeter of a triangle?

Back

P = side1 + side2 + side3.

Tags

CCSS.3.MD.D.8