Perimeter and Area Flashcard

Front

What is 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 area?

Back

Area is the amount of space inside a shape, measured in square units.

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 square with each side measuring 4 units?

Back

16 units (P = 4 × 4).

Tags

CCSS.4.MD.A.3

Front

What is the area of a square with each side measuring 3 units?

Back

9 square units (A = 3 × 3).

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If a rectangle has a length of 5 units and a width of 2 units, what is its area?

Back

10 square units (A = 5 × 2).

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If a shape has a perimeter of 20 units and is a square, what is the length of one side?

Back

5 units (P = 4 × side).

Tags

CCSS.4.MD.A.3

Front

What is the formula for the area of a triangle?

Back

A = 1/2 × base × height.

Tags

CCSS.6.G.A.1

Front

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

Back

12 units (3 + 4 + 5).

Tags

CCSS.3.MD.D.8