perimeter, circumference and area

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 rectangle?

Back

Area = length × width

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr (where r is the radius)

Front

What is the formula for the area of a circle?

Back

Area = πr² (where r is the radius)

Front

If a rectangle has a length of 10 units and a width of 5 units, what is its perimeter?

Back

Perimeter = 2(10 + 5) = 30 units

Front

If a rectangle has a length of 9 units and an area of 72 square units, what is the width?

Back

Width = Area / Length = 72 / 9 = 8 units

Front

What is the relationship between the diameter and radius of a circle?

Back

Diameter = 2 × Radius

Front

How do you calculate the area of a triangle?

Back

Area = 1/2 × base × height

Front

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

Back

Perimeter = 4 × side = 4 × 4 = 16 cm

Front

What is the area of a square with a side length of 6 cm?

Back

Area = side × side = 6 × 6 = 36 square cm