area/perimeter of compound shapes

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width)

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

What is the formula for the perimeter of a triangle?

Back

Perimeter = side1 + side2 + side3

Front

What is a compound shape?

Back

A shape made up of two or more simple shapes.

Front

How do you find the area of a compound shape?

Back

Calculate the area of each simple shape and then sum them up.

Front

How do you find the perimeter of a compound shape?

Back

Add the lengths of all the outer sides.

Front

What is the area of a square?

Back

Area = side × side

Front

What is the perimeter of a square?

Back

Perimeter = 4 × side

Front

What is the area of a circle?

Back

Area = π × radius²