Area and Perimeter: Rectangles,Squares, and Triangles

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 square?

Back

Area = side × side or Area = side²

Front

What is the formula for the perimeter of a square?

Back

Perimeter = 4 × side

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

If a rectangle has a length of 10 cm and a width of 5 cm, what is its area?

Back

Area = 10 cm × 5 cm = 50 cm²

Front

If a square has a side length of 4 cm, what is its perimeter?

Back

Perimeter = 4 × 4 cm = 16 cm

Front

What is the perimeter of a rectangle with a length of 8 cm and a width of 3 cm?

Back

Perimeter = 2(8 cm + 3 cm) = 22 cm

Front

If the perimeter of a triangle is 30 cm and two sides are 10 cm and 12 cm, what is the length of the third side?

Back

Third side = 30 cm - (10 cm + 12 cm) = 8 cm