Area of squares, rectangles, and parallelograms

The area of a square is calculated using the formula: $$A = s^2$$ , where $$s$$ is the length of a side.

The area of a rectangle is calculated using the formula: $$A = l \times w$$ , where $$l$$ is the length and $$w$$ is the width.

The area of a parallelogram is calculated using the formula: $$A = b \times h$$ , where $$b$$ is the base and $$h$$ is the height.

The area is $$5^2 = 25in^2$$ .

The area is $$10 \times 4 = 40cm^2$$ .

The area is $$6 \times 4 = 24cm^2$$ .

The height can be found using the formula: $$h = \frac{A}{b} = \frac{30}{6} = 5cm$$ .

The area is $$10^2 = 100in^2$$ .

The area is $$5 \times 3 = 15cm^2$$ .

The height is $$h = \frac{36}{9} = 4in$$ .